?WHOSHOULDATTEND

12+2 20+ 60+ 125+INNOVATIVEFEATUREDSPEAKERS

HOURS OF NETWORKING

EVENTSINTERNATIONAL

SPEAKERSEDUCATIONAL

SESSIONS

DAyS WITH MORE THAN 45 SESSIONS, KEyNOTES & TALKS

EURO MATERIALS

SCIENCE CONGRESS

COMPANY CEO’S | COMPANY DIRECTOR’S | DOCTORS | RESEARCHERS | STUDENTS | DELEGATES |

EDUCATORS | DIRECTORS OF ASSOCIATION AND SOCIETIES | SCIENTISTS

MARCH 26-27, 2020 | PARIS, FRANCE

Mercure Paris Charles De GaulleAirport & Convention

BP 20248 -Roissypôle Ouest -Route de la commune -95713

Roissy CDG Cedex

Venue

Dear Colleagues: Greetings!I extend my warm greetings to all participants of the “Euro Materials Science Congress” in Paris, France during March 26-27, 2020.

Our theme, “To codify revamping innovations in Materials Science and Engineering”, seems to be an ordinary duty for all scientists and engineers nowadays since Materials Science & Engineering, with its novel trends and constant evolution, is everywhere around us!Biomaterials, Emerging Materials, Nanomaterials, Nanotechnology & Materials for energy conversion are some of the few examples that continue to develop at a rapid pace as evidenced by the technological revolutions.I anticipate that our Congress will shed new light on various branches of Materials Science and Engineering. It will provide ample opportunities for collaboration, networking and partnerships.I wish you exciting and fruitful couple of days in spring Paris!

Welcome Message

Dr. N M Ravindra (Ravi)Professor of Physics New Jersey Institute of Technology, USA

http://materialsscience.peersalleyconferences.com/

Euro Materials Science 2020

NM RavindraNew Jersey Institute of

Technology, USA

Niloufar RaeisHosseini

Imperial College London, UK

Helen TownleyUniversity of Oxford

UK

Lucian BaiaBabeș-Bolyai University

Romania

Mojtaba MansoorianfarNanjing Forestry University, China

Yunqi LiuChinese Academy of

Sciences, China

Mitsuhiro Ebara National Institute for Materials

Science (NIMS), Japan

Arnaud CaronKorea University of Technology

and Education, South Korea

Raman SinghMonash University

Australia

Ramesh Agarwal Washington University

USA

Ji-Huan HeSoochow University

China

Ivan Bozovic Brookhaven National

Laboratory, USA

featured speakers

featured speakers

Francisco Torrens University of Valencia

Spain

Hugo LopezUniversity of Wisconsin-

Milwaukee, USA

David Matthews University of Twente

Netherlands

S Joseph AntonyUniversity of Leeds

UK

KIRIHARA Soushyuu Osaka University

Japan

Sanichiro Yoshida Utheastern Louisiana

University, USA

PD CozzoliUniversity of Salento

Italy

Jordi SortUtonomous University

of Barcelona, Spain

Tong LinDeakin University

Australia

Osman AdiguzelFirat University

Turkey

Astuty Bt AmrinUTM

Malaysia

Sofoklis Makridis University of Patras

Greece

PRESENTATION TIME TO

WITH YOURCONNECT

PEERS

Register & Participate

in

EUROPE MATERIALS SCIENCE CONGRESS

2020

FORUM

KEYNOTE FORUM / MINI-PLENARY SESSIONS

DISTINGUISHED SPEAKERS FORUM(ORAL ABSTRACT SESSIONS)

STUDENT FORUM

Presentations under Keynote Forum or Mini-Plenary Sessions includes abstracts with remarkable research value selected by the program committee. These significant speeches are delivered by globally recognized honorable speakers and it is open to all registrants.

In this forum, speakers and experts of the research field gets an opportunity to showcase their noble research work that involves comprehensive research findings. These formal oral presentations include a wide range of talks covering basic research to advanced research findings in accordance to the theme and scientific sessions of the conference.

TYPES OF ACADEMICREGISTRATIONS

This session is particularly introduced to encourage more number of student participation at international conferences, however it is not restricted only to students since it is also available for the participants with language barrier. There are specific guidelines to be followed to prepare the poster. Poster topic should be selected only from relevant scientific sessions with in-depth technical details.

An exclusive opportunity for students and young investigators to present their research work through a formal oral presentation. Young Investigators Forum provides a global platform for young researchers and scholars to showcase their valuable contribution to the scientific world and to get acknowledged by the global scientific community of experts. It is an excellent opportunity to recognize young scientific assets with promising research ideas. These oral presentations are of shorter time duration with 10-15 minutes of informative and precise presentations in relevant scientific sessions.

NO SECRET IS SAFE SHARE YOUR RESEARCH

SPEAKERREGISTRATIONCOMBO A(Registration + 2 night’s accommodation)

COMBO B(Registration + 3 night’s accommodation)

POSTER SESSION

YOUNG INVESTIGATORS FORUM

DELEGATE REGISTRATION

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EDUCATIONAL WORKSHOPS/ RESEARCH WORKSHOPS/CORPORATE WORKSHOPS/MINI- SYMPOSIA

HIGHLIGHTS OF THE DAY SESSIONS

EDUCATIONAL SESSIONS/ TRAINING PROGRAMS

MEET THE PROFESSOR @ NETWORKING SESSIONS

SCIENTIFIC TRACKS/ SESSIONS

With an aim of transferring knowledge among the participants, workshops are introduced as a part of international conferences. These interactive and occasionally practical sessions gives an opportunity for participants to engage in detail discussion. Workshops are mostly scheduled for 60 to 90-minutes. It may range from learning about a specific topic relevant to international education, products and research which sometimes involves practical demonstration. It helps in enhancing skills, knowledge and understanding of the research field in depth through interactive discussions.

“Highlights of the Day Sessions” is introduced to discuss and focus a ray upon previous day ORAL ABSTRACT presentations by experts to summarise the key findings. It helps in getting better insights into the various dimensions of the topic.

Educational Sessions or training programs are specifically designed for a better understanding of the latest findings and technologies. These are generally 45-minute sessions that gives an exposure to the multidisciplinary field, that provides in-depth learning experiences and address educational needs.

This session involves open discussion between the experts and session attendees, it gives enough time for getting answers to specific questions and doubts. It is an opportunity for attendees to increase their professional networking, sometimes also leads to an excellent collaboration opportunity.

Materials Science and Engineering | NanoMaterials, Nanoscience and Nanotechnology | Biomaterials and Medical Devices | Advanced Materials and NanoDevices | Advanced Energy Materials and Applications | Polymer Technology and Plastics | Ceramics and Composite Materials | Surface Science and Interfaces | Smart & Hybrid Materials | Materials Theory, Modeling and Charecterization | Materials Chemistry | Materials Physics | Structural and Nanostructured Materials | Graphene, Carbon and 2D Materials| Computational Materials Science | Electronic, Optical and Magnetic Materials | Advances in Dielectric, Piezoelectric Materials | Materials in Green Technology | Materials Synthesis and Processing | Metals, Mining, Metallurgy and Materials | Glass Science and Technology | Bioinspired Materials and Systems | Manufacturing Innovations and Metal Casting Technology

TYPES OF BUSINESSREGISTRATIONS

TYPES OF STUDENTREGISTRATIONS

TYPES OFADDITIONALREGISTRATIONS

SPEAKER REGISTRATION

REGISTRATION

COMBO A(Registration + 2 night’s accommodation)

YIF

COMBO B(Registration + 3 night’s accommodation)

DELEGATE REGISTRATION

Accompanying PersonE-PosterVirtual PresentationWorkshopsStart-Ups

POSTERS

COMBO A(Registration + 2 night’s accommodation)

COMBO B(Registration + 3 night’s accommodation)

NO SECRET IS SAFE SHARE YOUR RESEARCH

http://materialsscience.peersalleyconferences.com/

MATERIALS SCIENCE

ENERGy MATERIALS

NANOSCIENCE & NANOTECHNOLOGy

POLyMER SCIENCE & PLASTICS

BIOMATERIALS & MEDICAL DEVICES

CERAMICS & COMPOSITE MATERIALS

ADVANCED MATERIALS & NANODEVICES

SURFACE SCIENCE & INTERFACES

• Applications of Materials Science• Emerging Technologies in

Materials Science• Computational Materials Science• Biomimetic materials• Materials and Design• Novel Materials, Multifunctional

Materials• Quantum Materials• Materials Innovation and

Development• Carbon nanostructures and devices

• Nanochemistry • Green Nanotechnology• Carbon nanotechnology• Bionanotechnology• Nanofabrication• Functional Nanomaterials• Molecular Engineering• Nanophotonics• Nano Structured Carbon

Materials • Bionanomaterials• Drug Delivery Systems

• Nuclear Medicine• Optical Imaging• Rehabilitation Engineering• Biosensors• Tissue Engineering and

Regenerative Medicine• Ultrasound• Computational Modeling

• Advanced Engineering Materials

• Advanced Functional Materials

• Advanced Energy Materials • Advanced Healthcare

Materials • Advanced Optical Materials • Advanced Materials Interfaces • Advanced Electronic Materials • Advanced Materials

Technologies

• Batteries & Fuel Cells• Photovoltaic Materials• Renewable Energy• Energy Storage • Fossil & Nuclear Energy• Bioenergy• Geothermal• Renewable Fuels• Solar Energy

• Lasers in Polymer Science • Polymer Matrix Composites • Polymer Chemistry• Plastics and the Environment• Biopolymers• Smart Polymeric Materials• Hybrid organic-inorganic materials

synthesis• Dendritic polymers

• Advanced Composite Materials• Automotive Composites• Polymer Composites• Ceramic Lasers• Nanoceramics• Bioceramics• Nanocomposites• Biocomposites• Advanced Ceramics• Brick and Structural Clay• Refractories

• Applied Surface Science• Surfaces and Interfaces • Theoretical surface science• Surface physics• Surface Chemistry• Coatings and surface treatments• Surface characterization• Interfaces and thin films• Nanostructured materials

SMART & HyBRID MATERIALS MATERIALS CHARECTERIZATION MATERIALS CHEMISTRy MATERIALS PHySICS• Smart Materials and Structures• Magnetic smart materials• Shape Memory Alloys• Magnetostrictive• Shape Memory Polymers• Hydrogels• Electroactive Polymers• Bi-Component Fiber• Polymer hybrid materials• Bio-inorganic Hybrid Nanomaterials• Semiconductor Photocatalysis

• Material characterization Techniques

• surface characterization techniques• Ultrasonic Materials

Characterization• Atomic Theory and Atomic Structure• Material balance analysis theory• Powder Characterization• Coatings Characterization• Dispersions Characterization• Microscopy of Semiconducting

Materials

• Organic Chemistry• Inorganic Chemistry• Physical Chemistry• Theoretical Chemistry• Chemistry-Biology Interface• Materials Chemistry• Catalysis• Green chemistry• Analytical chemistry

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STRUCTURAL & NANOSTRUCTURED MATERIALS GRAPHENE, CARBON & 2D MATERIALS COMPUTATIONAL MATERIALS SCIENCE ELECTRONIC, OPTICAL & MAGNETIC MATERIALS

• Structural Mechanics• Nano WaterCube• Fibre reinforced cementitious

materials• Quantum dot• Quantum heterostructure• Nanowire• Nanostructured film• Gradient multilayer nanofilm • Nanocages• Magnetic nanochains• Nanocomposite

• Carbon nanotubes• Graphene and fullerenes• Graphene and ultra tin 2D materials• Graphene 3D printing• Uses on carbon Nanotubes• Graphene The Ultra-Capacitor• Graphene devices• Application of Graphene in biomedical

area

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methods

• Electronic Materials and Devices• Quantum Materials• Nanofabrication and Processing• Materials for Memory and Computation• Transparent Conductors• Advances in Optical Materials• Novel Optical Materials and Applications• Nonlinear Optical Materials• Narrow Bandgap Materials and Devices

http://materialsscience.peersalleyconferences.com/

THURSDAY, MARCH 26, 2020Concurrent Educational Sessions

GROUP PHOTO

LUNCH BREAK

COFFEE BREAK

COFFEE BREAK

GROUP PHOTO

LUNCH BREAK

COFFEE BREAK

COFFEE BREAK

DIELECTRIC MATERIALS

METALLURGy & MATERIALS

PIEZOELECTRIC MATERIALS

GLASS SCIENCE & TECHNOLOGy

MATERIALS IN GREEN TECHNOLOGy

BIOINSPIRED MATERIALS

MATERIALS SyNTHESIS & PROCESSING

MANUFACTURING INNOVATIONS

• Materials Joining• Nano and Bulk Materials Processing• Iron and Steel Technology• Integrated Computational Materials

Engineering• Corrosion Protection• Non-Ferrous Materials and Alloys • Phase Transformations

• Metallic Glasses• Photonic Glasses• Optical devices‎• Glass physics‎• Glass chemistry• Nanochannel glass materials• Glass Ceramics• Optical fiber• Optical lens design• Glass and Optical Materials

• Bioinspired self-healing materials• Responsive bio-interfaces and

surfaces• Dynamics of interacting cell-material

systems• Bio-inspired Materials and Sensing

Systems• Bioinspired materials and surfaces

for green science

• Powder metallurgy• Manufacturing Process• Welding• Machining• Shearing and Forming• Molding

METAL CASTING TECHNOLOGy CRySTALLOGRAPHy CONDENSED MATTER PHySICS MATERIALS SCIENCE APPLICATIONS• Principles of casting and splinting• Casting aluminum alloys• Casting simulation and optimization• New high-palladium casting alloys• Continuous Casting• Metal forming processes• Metal joining processes

• X-ray Crystallography• Applications of Crystallography• Crystallography in Modern Chemistry• Surface Crystallography• Solid State Crystallography• Crystallography in Materials Science• Electron crystallography• Chemical Crystallography• Aperiodic Crystals

• Principles of Condensed Matter Physics

• Condensed Matter Field Theory• Disorder in condensed matter

physics• Encyclopedic Dictionary of

Condensed Matter Physics• Condensed-Matter and Materials

Physics• Topological Aspects of

Condensed Matter Physics• Quantum Field Theory in

Condensed Matter Physics

• Material Research & Nanotechnology• Semiconductors & Microelectronics• Automotive & Aerospace• Mining and Minerals• Textile / Fibre Industry• Structural Imaging and Analysis

CHEMISTRy SEMICONDUCTORS AND SUPERCONDUCTORS MINERALOGy OPTICS

• Analytical chemistry• Physical chemistry• Organic chemistry• Inorganic chemistry• Biochemistry• Food chemistry• Environmental chemistry• Agricultural chemistry• Forensic chemistry• Geochemistry

• Superconductor Technologies for Particle Accelerators

• Superconductivity & Superconductors

• Electrodynamics of high-temperature• superconductors• Superconducting Quantum

Computing• Research• Iron-based superconductors

• Mineralogical Applications of Crystal Field Theory

• Planetary Materials• Environmental Mineralogy• Advanced Mineralogy• Topographical and descriptive

mineralogy• Basalt• Granite• Ore geology• History of mineralogy• Soil mineralogy

• Geometrical Optics• Reflection and refraction• Ray-tracing methods• Optics: Principles and Applications• Mathematical Theory of Optics• Ray Optics• Optics in Photography• Optical Coherence and Quantum

Optics

http://materialsscience.peersalleyconferences.com/

FRIDAY, MARCH 27, 2020Concurrent Educational Sessions

• Dielectrics conductors • Dielectric strength• Dielectric Materials and Applications• Dielectrics and Polarisation• Capacitor Dielectrics

• Piezoelectric Materials for Energy Harvesting

• Fundamentals of Piezoelectric Sensorics

• piezoelectric crystals• piezoelectric Sensor• piezoelectric transducer• Piezo- and Pyroelectric Materials

• Green technology architecture• Green sustainable technology• Green Technology & Alternative

Energy• Green building materials• Green materials for sustainable

• Inorganic Materials Synthesis• Thin-Film Processing• Structural and Spectroscopic Probing• Advanced Materials Design &

Processing• Fundamentals of Materials Synthesis

& Processing• Advanced Technology for Materials

Synthesis & Processing

Title: Energy Gap – Refractive Index Relations in Semiconductors –

Implications in Bandgap Engineering

NM Ravindra | New Jersey Institute of Technology, USA

Abstract:

The ability to tailor the bandgap of semiconductors for a desired application offers numerous

opportunities for implementation in communications, energy conversion, microelectronics,

optoelectronics/photonics, thermoelectrics and related areas. This talk will focus on the role of

materials, material configurations and the resulting device structures. Several case studies

reflecting the role of bandgap engineering in a variety of industry sectors will be illustrated. In

each case, the role of the temperature dependence of bandgap and refractive index and its

contributions to the device performance will be described.

Title: Preparation of Protonic Ceramics from Polymer Clay

W. Grover Coors | Hydrogène Hèlix, SAS, USA

Abstract:

Protonic ceramics made from yttrium-doped barium zirconate, BaZr0.8Y0.2O3-d, (BZY20) for hydrogen

separation membranes are difficult to prepare by conventional powder sintering. However, this obstacle has been

overcome with solid-state reactive sintering (SSRS), where the precursor powders react in-situ during sintering

rather than being calcined to the pure phase in advance. This permits fabrication of high-density ceramics

suitable for the most demanding hydrogen separation applications. With SSRS, monolithic specimens may be

prepared by almost any conventional ceramic formation method, but an added benefit of SSRS is that, unlike

with traditional powder sintering, where high sintered density depends on high powder packing density of the

‘green’ bodies, dense BZY20 is easily prepared from bodies with a large fraction of organic binder. As a result, a

variety of non-traditional ceramic fabrication processes may be employed that enable production of complex

shapes by simple, low-pressure molding processes commonly employed in the production of fine porcelain.

Plastic bodies of polymer clay are described that demonstrate the utility and scalability of such processes for

fabricating ceramic components suitable for use in electrochemical devices, such as hydrogen separation

membrane reactors. The polymer clay method facilitates molding and joining complex shapes with differing

functions-–like thin-electrode-supported membranes, ceramic/metal composite electrodes, electrical

feedthroughs, and dense structural elements containing internal channels for gas manifolding. Furthermore, the

polymer clay method uses many of the simple tools and techniques commonly employed by ceramic hobbyists.

Solid state reactive sintering of ceramic proton conductors fabricated using polymer clay bodies has the potential

to disrupt fifty years of ceramic manufacturing orthodoxy and place in the hands of thousands of investigators

the means for making and testing innovative prototype devices.

Abstract:

Photon generating and sensing semiconductor devices, such as light-emitting diodes (LED), pulsed /

continuous wave (CW) quantum well lasers (QWL), Vertical Cavity Surface Emitting Laser (VCSEL),

Quantum Dots Laser, and avalanche photo diode (APD), have been reported in various publications. In order

to improve the high speed CMOS output current, new technical features must be added with the scaling of

effective channel length for each technology node. It is feasible to build CMOS, a laser diode (in the CMOS

drain regions), and APD (in the CMOS channel / well regions) as one integral transistor. Selective epitaxial

films (compound direct bandgap materials) are deposited on silicon or underlying GaAs to form a laser. When

the MOSFET is on, light emitted from the laser is absorbed by the APD, causing an avalanche breakdown.

The high breakdown current flows through the laser to produce more lights. When the MOSFET is off, the

laser and APD are also turned off.

Power regulating semiconductor devices, such as trenched vertical power MOSFETs, laterally diffused

MOSFETs (LDMOS), and super junction MOSFETs are widely used in RF, mixed signal ASICs as discrete

or integrated power regulating devices. The optoelectronic CMOS technique may offer an efficient, new path

to high voltage and low Rdson, surpassing the traditional difficult BV and Rdson tradeoff cycles.

The Photonic CMOS technique may also improve the performance and speed of semiconductor memories,

such as DRAM and FLASH, which are based on MOSFETs. The resolution of CMOS image sensors can be

improved with the Photonic CMOSFETs, using Nonlinear Optics, and special ROIC (Read Out Integrated

Circuit) to process multiplexed analog and digital light signals.

James N. Pan | Advanced Enterprise and License Company, USA

Title: Photonic CMOSFETs for High-Speed or High-Power Logic,

Memory, and CMOS Imaging Applications

Abdel-Hakim Bouzid | IEcole de Technologie Superieure, Canada

Title: Thermal Ratcheting of Polymeric Materials under Compressive

Loading

Abstract:

This paper gives an insight of High Density PolyEthylene (HDPE) and Poly Vinyl Chloride (PVC) materials

subjected to thermal ratcheting under compression. The study investigates the influence of thermal cycling

under compressive loading of polymeric materials used in piping systems and deployed in bolted flange

connections. HPDE and PVC are two of the highly exploited materials that are increasingly popular in

domestic water and gas services but also in nuclear and petro-chemical industries. Exceptional corrosion and

chemical resistance, frictionless flow and excellent service life make them the best alternative for

conventional metal pipes in natural gas applications and domestic piping services. This research work brings

new insights on the effect of creep and thermal ratcheting on the mechanical behavior of HPDE and PVC. The

cumulative deformation of these materials under the combined influence of compression and thermal cycling

is yet to be implemented in existing design standards. The need of the hour to accommodate thermal

ratcheting behavior in the design of pressure vessel and piping components of polymers and thereby avoiding

structural and leakage failure subjected to load and temperature variation.

The thermal ratcheting of polymer materials and the thermal cycling behavior of is of utmost importance

primarily due to the inherent property of relatively low glass transition temperature. Since a good selection of

polymer materials can operate only in a moderate temperature conditions, a small perturbation in temperature

can cause noteworthy change in the physical dimensions of the structures. Thermal cycling produces

cumulative deformation that is harmful for structures made of high density polyethylene and polyvinyl

chloride materials which usually operates below 60 °C. The cyclic fluctuation of temperature is applied to the

test sample to understand the thermal ratcheting phenomenon.

Title: Ethanol conversion into hydrocarbons employing hierarchical

HZSM-5 zeolites

Pedro Nothaft Romano | Federal University of Rio de Janeiro, Brazil

Abstract:

In recent years, catalytic conversion of ethanol into hydrocarbons has attracted considerable attention, since that alcohol can be used

as a green raw material capable of providing an alternative route to produce a great range of valuable chemicals for the

petrochemical industry. In this context, the obtaining of light olefins and BTEX aromatics (benzene, toluene, ethylbenzene and

xylenes) from alcohols have attracted notable attention, since the alcohol-to-jet (ATJ) technology can provide a renewable route to

obtain kerosene from light alcohols, such as ethanol and butanol.

In order to perform the ethanol conversion into hydrocarbons, two HZSM-5 zeolites with framework SAR values equal to 23 and 53

were employed as starting materials (HZSM-5_20 and HZSM-5_50). Aiming at increasing the zeolites’ pore sizes, two hierarchical

zeolites were synthesized by means of a desilication technique (HZSM-5_PT20 and HZSM-5_PT50).

All four HZM-5 zeolites were initially evaluated regarding ethanol conversion and product distribution under the following

conditions: 360 °C, 15 bar, 38 h-1

space velocity and 3 h time on stream (TOS). The results indicated that the desilication treatment

has a positive effect concerning ethanol conversion, which reached values higher than 80% for the HZSM-5_PT50. After that, a

central composite design was employed for the optimization study with the HZSM-5_50 zeolite. The reaction parameters:

temperature (A), pressure (B), and space velocity (C) were chosen as independent variables (factors), and BTEX and C2= (ethylene)

molar concentrations (mol%) were chosen as experimental responses. It was found that maximum BTEX (benzene, toluene,

ethylbenzene, and xylenes) and minimum ethylene production were reached for the following conditions: temperature 450 °C,

pressure 20 bar, and WHSV (weight hourly space velocity) 5 h-1

.

The stability of the HZSM-5_(S50) catalyst was also investigated (Figure 1). Complete ethanol conversion was observed for the

entire 10 h TOS evaluation at 375 C, 10 bar, and 70 h-1

. On the other hand, both gaseous and organic liquid products’ distribution

changed with increasing TOS.

María Emilia Castelló | National University of La Plata, Argentina

Abstract:

This work shows in a clear and simple way the feasibility of obtaining chitosan, the study of its properties, and the

preparation of films and its characterization by different techniques. The project involves the complete process, from the

isolation from raw material available in the local environment, and its comparison with similar products of commercial

origin, until its final application through the physicochemical analysis of the same.

In the obtention of chitosan, the isolation of chitin from residues of the Patagonian shrimp (Pleoticus muelleri) and its

subsequent conversion to chitosan under different reaction conditions was evaluated. Regarding the application of these

products, a commercial chitosan was used in the preparation of films containing glycerol as a plasticizer (5, 10 and 20%

w/w). The films were obtained by the casting method from dispersions prepared combining a 1% v/v aqueous solution

of acetic acid containing glycerol, using a neutralization process for the demoulding.

In order to study the prepared materials, the products obtained from the isolated chitin were characterized by evaluating

their molecular weight (MW) and degree of deacetylation (DD) , compared with two commercial products. Chitosan

and chitosan-glycerol films were characterized by Fourier transform infrared spectroscopy (FT-IR) , UV-Visible

spectroscopy and scanning electron microscopy (SEM). In addition, its behaviour against water (contact angle and water

absorption) and mechanical properties (breakage stress, percentage elongation and elastic modulus) were studied. It was

noted that a three-day reaction time at 120 °C is necessary to obtain a chitosan sample from the extracted chitin.

Chitosan-glycerol films were found to be transparent and their properties depended on the plasticizer content, obtaining

homogeneous systems up to concentrations of 10% w/w . In addition, the films proved to be more hydrophilic than the

reference material, with smaller contact angle, higher water absorption and higher flexibility.

Title: Production and characterization of chitosan and glycerol-chitosan

films Development and the Environment

Title: Adsorption of arsenic (III) and arsenic (V) by ZnO-CuO composites

Elisban Juani Sacari Sacari | Universidad Nacional Jorge Basadre Grohmann, Peru

Abstract:

Chronic consumption of water contaminated with arsenic in locations that do not have a water

treatment plant increases the risk of developing arsenic-related diseases. We have synthesized

a compound of CuO-ZnO, using the method of precipitation assisted by ultrasound, with the

ability to effectively remove the arsenic (III and V) from the water. The compound has been

characterized by techniques such as X-ray diffraction, scanning field emission electron

microscopy, in turn, the arsenic concentration was carried out using atomic absorption

equipment with graphite furnace. The compound used has a high arsenic adsorption capacity,

removing up to 10 ppm of arsenic (V) and 2.6 ppm of arsenic (III). The effect of pH and the

competition of ions such as chlorides, sulfates, and nitrates on the arsenic removal capacity of

water was also studied, observing that the working pH range of the compound is wide (pH 3-

11), for the arsenic (V), while the behavior in the removal of arsenic (III) decreases at basic

and acids pHs, showing its highest capacity at neutral pH. Coexisting ions do not significantly

affect the removal of arsenic (V), but they do affect the ability to remove arsenic (III),

reducing their efficiency by approximately 10%. The results of this research can contribute to

the challenges that currently exist in water pollution.

Title: Biomemristors based on Organic Materials

Niloufar RaeisHosseini | Imperial College London, UK

Abstract:

A memristor is a two-terminal device with a simple metal-insulator-metal structure and its

conductance is tuned by external inputs with a memory effect. A memristor is controlled by

internal state variables and input stimuli. Resistance switching random access memory

(ReRAM) is a category of memristor and has advantages of scalability, reliability, low power

consumption, and fast switching. ReRAM that use biodegradable organic materials as its

active film is a biomemristor and has the merits of flexibility, transparency, and compatibility

with various substrates. Compared to semiconductor devices, biomemristor is inexpensive and

easy to fabricate. Assimilation of biocompatible materials in ReRAM devices offers outlooks

to use them in biomedical aplications. I represent a robust, non-volatile, flexible, and

transparent biomemristor based on biopolymer. The source of the bipolar resistive switching

behaviour will be discussed in this talk. The set/reset behaviour in the memory device based

on biopolymer makes it suitable for use in neuromorphic devices.

Title: Energy Efficient Design of New Building except New Low-rise

Residential Buildings: Cleaner and Greener Technologies, Sustainable

Abdeen Mustafa Omer | University of Nottingham, UK

Abstract:

Globally, buildings are responsible for approximately 40% of the total world annual energy

consumption. Most of this energy is for the provision of lighting, heating, cooling, and air

conditioning. Increasing awareness of the environmental impact of CO2, NOx and CFCs

emissions triggered a renewed interest in environmentally friendly cooling, and heating

technologies. Under the 1997 Montreal Protocol, governments agreed to phase out chemicals

used as refrigerants that have the potential to destroy stratospheric ozone. It was therefore

considered desirable to reduce energy consumption and decrease the rate of depletion of world

energy reserves and pollution of the environment. This article discusses a comprehensive

review of energy sources, environment and sustainable development. This includes all the

renewable energy technologies, energy efficiency systems, energy conservation scenarios,

energy savings and other mitigation measures necessary to reduce climate change.

Title: Nanoparticles for the treatment of paediatric cancers

Helen Townley | University of Oxford, UK

Abstract:

In the UK 4500 children are diagnosed with cancer every year. The types of cancers that affect children can be

quite different to those affecting adults. Our research is focussed on nanoparticulate therapies for

rhabdomysarcoma, a soft tissue cancer, and glioblastoma a brain cancer. Using nanoparticles we can deliver

cancer drugs directly into cells. Nanoparticles can accumulate at the tumour site due to the enhanced

permeation and retention effect. This can minimize off-target effects by local release of the drug. In addition,

controlled release can result in the release of drug specifically at the site of action. We have also incorporated

nanoparticles into wafers that can be placed into the surgical bed after tumour removal. This permits slow

release of an anti-chemotherapeutic drug over several weeks to ensure that any remaining cancer cells are

mopped up.

We have used natural products as effective anti-cancer agents. However, the activity of the compounds can be

quickly lost due to their volatility. Encapsulation in nanoparticles can protect the compounds from degradation

and ensure their activity for much longer periods of time. In particular, the compounds citral and ophiobolin

have been used effectively against a number of different cell lines. Furthermore, we have shown that

nanoparticles can be made from the natural material itself. Melanin is a naturally occurring pigment in the body

which is involved in a range of functions from photosensitization, thermoregulation, protection from radiation,

and free radical quenching and metal iron chelation. Iron is needed in much greater amounts by cancer cells for

their rapid proliferation. Chelation of iron in the total body would be detrimental since it is needed by all cells

in the body for proper function. However, melanin nanoparticles can be localized to the tumour and deplete the

cancerous cells of iron, resulting in cell death.

Title: Identification and first steps of characterization of a promising new

heat storage material for high temperature applications

Fouzia Achchaq | Bordeaux University, France

Abstract:

Industrial sectors such as those of metallurgy, ceramics, glass, concentrated solar thermal energy, chemistry and

so on have now to seriously consider thermal energy storage as a key part for a successful broad energy mix

achievement. Otherwise, it will be indeed very difficult to take advantage of each cutting-edge technology to

carry out a low-cost and efficient energy transition. Until now, the choice of materials to be used in the storage

units with a working temperature range varying from 300 to 600°C has been directed to the phase change

materials. These latter are mainly eutectic compositions showing the advantage of behaving like pure

substances: their fusion is congruent and occurs at a constant temperature. However, the phase diagrams

theoretical study of salt-based binary systems has shown that stoichiometric peritectic compounds have, on

average, energy densities two to three times higher than those of phase change materials (molten salts) used in

existing concentrated solar power plants, such as Archimedes in Italy for instance. This performance is related

to a reversible chemical reaction occuring in addition to the solid/liquid transition during the thermal energy

discharge process of the material.

On the one hand, this work focus thus on these advanced energy materials for ultra-compact thermal energy

storage at high temperatures (300-600°C) that can provide, at almost constant temperature and ambient

pressure, a potential energy density much higher than that of the pure and eutectic materials. This is due to their

capacity to combine all advantages provided by sensible, latent and thermochemical processes. On the other

hand, this work presents more specifically the case study of the Li4Br(OH)3 peritectic compound selected from

the LiOH/LiBR phase diagram as a highly promising candidate for heat storage applications at around 300 °C

with an outstanding energy density of 434 kWh/m3.

Title: In situ HT-SEM study of the synthesis process of a promising new

heat storage material

Philippe Legros | PLACAMAT, France

Abstract:

This study is performed in the framework of ANR-Pc2TES project dealing with the development of the

peritectic compounds as new thermal energy storage materials for temperatures varying from 300 to 600°C,

which allows covering a wide spectrum of applications. The peritectic microstructure development is much less

understood than single-phase or eutectic solidification processes. The level of comprehension drops drastically

about ionic alloys such as LiBr/LiOH binary systems. Besides, Li4Br(OH)3 performances depend strongly on a

complex interplay between the initial composition, the imposed temperature gradients, the operating

surrounding atmosphere and the solid fraction growth velocity. As a consequence, Li4Br(OH)3 heat energy

storage potential may be strongly affected. The objective of this work is hence to participate to an in-depth

understanding of the Li4Br(OH)3 formation process by establishing the critical links between the processing

conditions and the final microstructure formation. To do so, the influence of working parameters such as the

nature of the surrounding atmosphere, cooling rates and thermal gradients and so on is studied by using a hot

stage placed inside the scanning electron microscope chamber.

The first results of the in situ and real-time experiments performed on LiBr, LiOH and Li4Br(OH)3 at

secondary vacuum and then, at a nitrogen-rich environment at microscale are presented and discussed. The

thermally-induced transitions of the starting materials LiOH and LiBr have been observed highlighting the

LiOH decomposition process into Li2O. The Li4Br(OH)3 morphology, validated by X-ray diffraction tests, are

then compared to that obtained at the end of the ex situ synthesis by using the standard thermal treatment. These

results have also proven to be very useful to better understand those obtained by using the differential scanning

calorimeter afterwards.

Title: Effect of textiles’ surface on the properties of conducting polymers

composites deposited onto textile through 3D printing

Prisca Aude Eutionnat-Diffo | GEMTEX – Laboratoire de Génie et Matériaux Textiles, France

Abstract:

Thermoplastic Conducting Polymers Composites (CPCs) deposited onto textiles through 3D

printing and more specifically Fused deposition Modelling (FDM) process are recently used to

develop smart textiles for various applications. 3D printing is a technology which can exhibit

ease of processing, low cost and versatility and low waste of material. The durability and

flexibility the CPCs applied on textile materials through 3D printing are important to consider

in the development of comfortable and durable smart textiles via FDM process. For this reason,

adhesion, stress and strain at rupture, deformation and abrasion resistance of these materials

need to be optimized and understood. In this study, the influence of the textiles’ surface

characteristics on the properties of the CPCs deposited onto the textiles is approached. Indeed,

the surface of the different textile materials was characterized by measuring their roughness and

porosity; and then linked to the adhesion, the stress and strain at rupture, the deformation and

the abrasion resistance of the 3D printed CPCs onto textiles through statistical models. Based

on these models, each of these properties was optimized. It was found that higher roughness

and porosity led to better adhesion and stress at rupture but lower wear resistance (abrasion)

and deformation. These findings are important in the development of smart textiles through

FDM process.

Title: Preparation of n-hexadecane/polycaprolactone microcapsules via

single electrospraying and coaxial electrospraying: comparison of their

formation, structure and properties

Shengchang Zhang | GEMTEX – Laboratoire de Génie et Matériaux Textiles, France

Abstract:

Phase change materials (PCM) can release (or store) a large amount of latent heat when the surrounding temperature is

lower than its crystallization point (or higher than its melting point). Thus, PCM is widely applied in thermal management

and energy storage in textile sector. More meaningfully, when PCM is encapsulated into shell matrix, not only the leakage

of PCM during its phase transition can be effectively prevented, but also the thermal conductivity of PCM can be

improved significantly. Meanwhile, the durability of phase change microcapsules (mPCM) can be also prolonged.

Fabricating and designing mPCM with a core-shell structure have attracted more and more attention.

Electrospraying, as a green and high-efficiency electrohydrodynamic atomization technology, has a great advantage and

potential to fabricate microspheres or microcapsules. One of the main benefits of the use of the electrospraying route in

preparation of mPCM is the control of the structure and properties of mPCM via adjusting the operating parameters as

well as solution properties. Among a series of operating parameters, using different electrosprayed nozzles can result in

different morphoogies and thermal properties from electrosprayed mPCM. Thus, on the one hand, the formation of Taylor

cone and the break-up process of charged droplets depend on the kind of electrosprayed nozzle used. On the other hand,

the diffusion of PCM and the evaporation of solvent during the flight process of electrosprayed droplets obtained from

different nozzles are also different. Therefore, it is interesting to investigate the effects of nozzle geometry on the

structure and properties of electrosprayed mPCM. In this study, a single nozzle and a coaxial nozzle were applied to

synthetize n-hexadecane/polycaprolactone microcapsules. The size and morphology of electrosprayed microcapsules were

characterized by scanning electron microscopy (SEM) and optical microscopy (OM). The core-shell structure of

electrosprayed microcapsules was analyzed via transmission electron microscopy (TEM). The thermal behaviour and

thermal degradation were studied via differential scanning calorimeter (DSC) and thermogravimetric analysis (TGA).

From these experimental results, the comparison between the use of a single or coaxial nozzle in the preparation of

electrosprayed mPCM with different structures and properties was realized.

Title: Optical Properties Tunability of hybrid Ferromagnetic-Plasmonic

nanostructures

Maha Hadded | University of Technology of Troyes, France

Abstract:

Plasmonic nanoparticles have interesting applications in various fields such as electronics, optoelectronics,

biotechnology, and medicine. Nanoparticles purely made of gold or silver have aroused particular interest in

recent decades, but unfortunately they are expensive and also limited in physical properties. The challenge

nowadays is to minimize the cost of plasmonic nanoparticles and especially to explore more functionalities than

gold or silver nanoparticles. In our present work we are interested in hybrid ferromagnetic-plasmonic

nanoparticles. We limit ourselves here to a theoretical analysis of the optical response of model nanostructures

with two layers (ferromagnetic/gold) and three layers (gold/ferromagnetic/gold). The scattering and absorption

efficiencies of light by a single magnetoplasmonic nanoparticle embedded in a non-absorbing, isotropic and

homogeneous medium are computed numerically in the framework of finite-difference time-domain formalism.

For Fe3O4/Au and Co/Au nanoparticles, our simulation highlights a strong absorption resonance whose amplitude

and spectral position strongly depend on the ferromagnetic-layer thickness and the aspect ratio of the

nanostructure. The resonance peak is found to blushift in the case of Co/Au nanoparticle, whereas it redshifts in

the case of Fe3O4/Au nanostructure, as the thickness of ferromagnetic-layer and the aspect ratio increase. For the

proposed Au/Co/Au nanostructure, the thickness of the gold-layer is found to be a determining parameter in

controlling the magnitude and the spectral position of the absorption and light scattering resonances. The

tunability of the absorption resonance of light by such hybrid ferromagnetic/plasmonic nanostructures in the Vis-

NIR range make these nanoparticles promising agents for bioimaging and photothermal therapy applications.

Title: SnTe thermoelectric materials: last advances

Bertrand Lenoir | Lorraine University, France

Abstract:

Thermoelectrics are the basis of many solid-state thermal to electrical conversion devices or Peltier cooling

devices actively considered for waste heat recovery, energy harvesting and cooling applications free of

environmentally harmful coolant gasses.

Thermoelectric materials require a unique combination of thermal and electric transport properties in order to be

efficient converters. For instance, it is desirable to have simultaneously a high thermopower and a low electrical

resistivity and thermal conductivity in order to reach high dimensionless figure of merit (ZT). Narrow-band-gap

IV-VI semiconductors represent a historically important class of thermoelectric materials. As one of the

representative compound of this class, tin telluride (SnTe) has been reinvestigated over the last years

demonstrating its potential as a high-temperature (400 – 800K) p-type thermoelectric material.

In this presentation, we report on the recent advances made on SnTe based materials to enhance their

thermoelectric performance. This review will cover the key strategies including defects engineering, band

convergence, resonant doping, synergistic engineering, and structure design. Thanks to these approaches,

significant progress have been made on SnTe, making this material a robust candidate to replace toxic PbTe‐based

thermoelectric materials for electrical power generation.

Abstract should give clear indication of the objectives, scope, results, methods used, and conclusion of your work.

One figure and one table can be included in your results and discussions.

Title: Influence of degree of filling on mechanical properties of PLA

obtained by 3D printing methods

Anna Gawel | Cracow University of Technology, Poland

Abstract:

The introduction explains the basic terms of method of production, crystallization

and hydrolytic degradation of polylactide and their meaning for changing the properties

of this material. Samples employed in this investigations were made of polylactide acid using a

3Dgence printer. Half of the specimens were subjected to crystallization process (C), which

consisted of annealing in heating chamber at 80 degrees of Celsius for 2 hours and then slowly

cooling. The study part of the paper presents the assessment of the impact of the degree of filling

of samples (constant print angle 45 deg) made of a polylactide filament by 3D printing on the

basic physico-mechanical properties before and after the hydrolytic degradation process and the

effect of crystallization on the change of properties at the high temperature. From a number of

tests of strength properties of the material, it was found that samples with a lower degree of filling

have much worse results of strength tests. The formation of crystalline lattices significantly

increases the discussed parameters and hydrolytic degradation in most cases weakens the sample.

The degree of filling of the sample has a major impact on the strength properties of the samples.

A smaller printing angle generates a shorter printing time and decrease in density. Performing

crystallization of the sample improves its strength and modulus of elasticity, and slightly reduces

deformation at break, especially in the elevated temperature range. Hydrolytic degradation

reduces the effect of crystallization on the obtained strength properties.

Title: Liposomes and gold nanoparticles for efficient bionano catalysis in an

aqueous solutions

Ryszard Ostaszeski | Institute of Organiac Chemistry Polish Academy of Sciences,

Poland

Abstract:

Chemical reaction can be guided by soft, dispersed interface rich aqueous systems and nanoparticles1. Aqueous

solutions are considered to be sustainable, environmentally friendly reaction media, but its use is often limited by

poor reactant solubility. This limitation can be overcome by converting aqueous solutions into soft, dispersed

interface- rich systems such as polyelectrolyte solutions, micellar solutions, oil- in-water microemulsions or

vesicle dispersions. All consist of homogeneously distributed dynamic structures that, in a fashion reminiscent of

enzymes, provide local environments that are different from the bulk solution. The presence of soft structures

leads to selective reaction accelerations and also changes in reaction pathways, whereby chemical reactions are

guided towards desired products. We were focused our attention on multicomponent reactions which can be

accelerated in an aqueous vesicle system2. This lead to a new, alternative route for the synthesis of a variety of a-

aminoacyl amides via the four-component Ugi3, to a-acyloxy carboxamides via a chemoenzymatic cascade with

Passerini raction4 and chemoenzymatic tandem oxidation–Ugi reaction promoted by surfactants leading to

formation of peptidomimetics5. On order to achieve effective regulation of enzyme catalyzed processes the

influence of gold nanoparticles on model enantioselective enzymatic reaction was investigated. Two different

approaches toward stereoselective bionanocatalysis were combined based on enzyme immobilized and embedded

on gold nanoparticles6. Over twenty different hydrolases were tested and only in two cases model reaction was

indeed catalyzed by embedded enzymes. The influence of liposomes and gold nanoparticles on the course of

selected organic reaction will be discussed and presented on selected examples. Several important factors

associated with nanoparticles structures and surfactant additives to reactions for efficient bionano catalysis will be

emphasized.

Title: Motley String Theory and New Physics

George Yury Matveev | IT Consultant, Stockholm, Sweden

Abstract:

Postulate 1: Every spacial dimension of String has unique intrinsic property which we call "color".

Postulate 2: There is force acting on spacial dimensions of string such that it makes dimensions of complementary colors

(Red_i , Green_i , Blue_i ) interact and unite in a colorless threads perceived as observable dimensions.

"Color" property of String's spacial dimensions is somewhat similar to 3 "color charges" of quarks in Quantum Chromo

Dynamics, but has different meaning, since it is viewed here as intrinsic characteristic of spacial dimensions in Motley

String theory corresponding to different values of string tension tensor T_i in different dimensions. String state at very high

energies (early universe, Planck length about 10 -33 cm) is such that all String spacial dimensions are in a free state similar

to quark-gluon plasma of Quantum Chromo Dynamics.

At lower energies (modern universe) strong color force becomes dominant and makes String's complimentary (or using

classical optics term "additive") spacial dimensions (Red_i , Green_i , Blue_i ) interact to form 3 threads (in case of 9+1

dimensional Superstring) which appear to be colorless from distances larger than size of baryons (proton and neutron).

Spacial dimensions of additive "colors" are "glued" together.

Observable by humans Gray spacial dimensions D(i) are essentially compactified threads of Red(i), Green(i) and Blue(i)

string spacial dimensions:

D(i) = R(i) + G(i) + B(i), where i =1,2,3

On the other hand, Gluons are known to carry and transmit "color charge" between quarks.

Title: Investigating the Effect of Doping TiO2 Compact Layer by Cu

Ions for High Performance Perovskite Solar Cells

Alaa Ahmed Zaky Hussein | National Center for Scientific Research, Greece

Abstract:

Perovskite solar cells (PSCs) have been recently developed as the most promising alternative to silicon-based

counterparts. In the n-i-p configuration, the electron transporting layer (ETL) plays a vital role in the power

conversion efficiency (PCE) of PSCs. High electron mobility and conductivity of the ETL, especially when it is a

compact one, are necessary towards highly performing PSCs by reducing excessive charge accumulation and

guaranteeing effective electron passage to the ETL/perovskite interface.

Contact angle measurements confirmed that the introduction of copper ions (Cu2+

) into the compact TiO2 layer

increased its hydrophobicity, thus favoring improved perovskite crystallization, a fact corroborated by XRD

analysis. The trap-filled limit voltage (VTFL) for FTO/ETL /MAPbI3/PCBM/Ag devices shows a significant

decrease with the Cu-TiO2 compact layers, which is associated with lower traps density for the corresponding

perovskite film. Moreover, the doping of Cu2+

in TiO2 also affects the photovoltaic properties (Figure 1). Indeed,

a PCE higher than 18% was obtained for the PSCs with the optimal Cu+2

concentration together with open circuit

voltage (Voc) of 1.1 V, current density (Jsc) of 23.15 mA·cm−2

, and a fill factor (FF) of 73%. These modified cells

outperform the performance of the reference device (using the TiO2 ETL) showing a PCE equal to 15.78% (with

Voc equal to 1.07 V, Jsc of 20.87 mA cm−2

, and FF equal to 70 %). Finally aging tests realized under controlled

under controlled conditions confirmed that the copper-doped devices showed higher stability in comparison with

the non-doped ones.

Title: Determination of the wave parameters of the gravitational field

and their confirmation

Valentyn Nastasenko | Kherson state maritime academy, Ukarine

Abstract:

An analytical analysis of the gravitational constant G = 6.6739010-11

m3/(kgs

2), in the framework

of its dimension, which is associated with Planck’s values of length, time and mass, showed that a

frequency can be distinguished in it. In further works, it was associated with the frequency of

oscillations of the waves of the gravitational field νG = 7.41042

s-1

(Nastasenko constant). Its use,

within the framework of the wave function λG = с/νG, made it possible to determine all other

parameters of the gravitational field: wavelength

λG = 4.051249410-35

m, amplitude AG = λG = 4.051249410-35

m, period TG = 13.5|135|10-44

s,

energy EG = 4,90329109 J.

On this basis, the force of action of the gravitational field was determined. For the Earth, its use

made it possible to determine the acceleration of gravity through the found wave parameters of

the gravitational field. The results obtained completely coincide with the

g = 9.81 m/s2 value determined through the interaction of the masses according to Newton’s law

of universal gravitation. A similar coincidence of the results was obtained for the attractive forces

of the moon, the sun and other objects of the solar system found through the wave parameters of

the gravitational field and according to Newton’s law.

Thus, the reliability of the proposed wave parameters of the gravitational field was strictly

proved.

Title: Quantum metric of harmonic motion of matter

Eugene Machusky | Kyiv Polytechnic Institute, Ukraine

Abstract:

The information-entropy-energy paradigm of quantum metric and quantum signal processing is logically developed and mathematically

justified using combination of renormalized gauge theories with direct and inverse functional analysis. The analytically obtained

matrices of mutual functional relationships of transcendental numbers pi and e with infinite progressive and inverse natural sets

completely describe the topology of subatomic and hyper-atomic space, create a quantum computational bridge between continuous and

discrete mathematics, between special and general theory of relativity, between theories of strings, supersymmetry, loop gravity and

multiverse. The median harmonic values and entropy of the basic quantum units are calculated with an accuracy that is limited only by

the bit capacity of computer. It is shown that the new SI-2019 metric system and the standard physical model have some methodological

fallacies that limit the extreme accuracy of the mutual coordination of fundamental quantum units and introduce excessive informational

entropy in quantum communications, quantum information processing, and quantum technology.

During the past 100 years, many scientists have been amazed at the remarkable mathematical efficiency of quantum physics. But the

simplest and perhaps the only reason for this is that quantum physics, by its nature and origin, is actually no more and no less than the

universal metric and universal informational system based on well-measured values and decimal orders of energy quanta. This can be

clearly illustrated by the recently discovered gauge set of mutually related parametric equations that functionally connect the numbers pi

and e and their decimal gradients with an infinite series of integers and their inverse values. Britannica.com define the gauge theory as

class of quantum field theory involving both quantum mechanics and special theory of relativity that is commonly used to describe

subatomic particles and their associated wave fields. In a gauge theory, there are transformations of the field variables that leaves the

basic physics of the quantum field unchanged. This condition, called gauge invariance, gives the theory a certain symmetry, which

governs its equations. In short, the structure of the group of gauge transformations in a particular gauge theory entails general restrictions

on the way in which the field described by that theory can interact with other fields and elementary particles. Renormalization by which

divergent parts of a calculation, leading to nonsensical infinite results, are absorbed by redefinition into a few measurable quantities, so

yielding finite answers.

Title: Specific features of the crystallinity and morphology in designing

materials for targeted applications

Lucian Baia| Babeș-Bolyai University, Romania

Abstract:

Nowadays, it is widely accepted that a deep understanding of the morphological and structural characteristics of the used

(nano)structures is needed for obtaining a maximum efficiency for a desired application. The type of the structure, e.g.,

crystalline, amorphous, etc., its shape and size are key issues in designing novel materials with tuned properties. The present

work is dealing with a selection of such topics. The first one relates about the influence of morphological particularities of

anatase titania crystals on the photocatalytic efficiency to decontaminate chemically polluted water. The shape controlled

titania microcrystals obtained hydrothermally in the presence of carbon nanotubes, with a high amount of the most reactive

{001} facet, were investigated. The developed holes and other significant structural alterations observed after samples

calcination were found to enhance the photocatalytic activity of titania crystals. The causes that generated the noticed

improvements were also analyzed.

The second topic is dealing with hierarchical TiO2 nanostructures synthesized by hydrothermal method by involving two

precursors, namely tetraisopropyl orthotitanate (TTIP) and tetrabutyl orthotitanate (TBU), It was found that their structural

and optical properties are dependent on the synthesis parameters and the developed TiO2 crystalline systems’ crystal phase

distribution and the morphology are very sensitive to the composition of the solvothermal system. The TBU samples

exhibited higher conversion rate in photodegradation of an etalon pollutant.

The third topic reports about the graphene oxide (GO) based membranes as important materials used in smart technologies

and applications. Free-standing graphene oxide (GO) membranes were developed by involving a scaled-up, non-toxic, and

low cost self-assembly process. The tunability of the morphological, structural and optical properties of the membranes was

achieved by using different self-assembly time. A structural model for the membrane formation during the self-assembly

process was also proposed taking into consideration the structural and morphological differences (i.e. sheet size, surface

chemistry and surface charge) between the three-sorted GO fractions.

Title: Impact of ionizing irradiation on LEDs during operation

Alexandr Vasilevich Gradoboev | Tomsk Polytechnic University, Russia

Abstract:

Radiation technologies allow to control in a guided way of semiconductor devices parameters. The purpose of this

work is to develop of radiation technologies aimed at improving of radiation resistance and reliability of LEDs

based upon AlGaAs double heterostructures. The objects of this investigation were industrial LEDs manufactured

on the basis of dual AlGaAs heterostructures with 5 μm active layer grown on the monocrystalline n-GaAs wafer

by means of liquid epitaxy. Characterized parameters of LEDs were taken using an automated measurement

complex with spherical photometric integrator. Irradiation by static gamma-quanta was carried out on a stationary

installation based on cobalt-60 isotope. The level of exposure was characterized by absorbed dose (Gy). The level

of exposure was characterized by neutron fluence Fn (cm-2). The reliability was estimated by results of step-by-

step tests. The parameters of LEDs were measured before, after irradiation and after every step of accelerated

tests. The research of radiation resistance and reliability of LEDs based upon AlGaAs are presented. Radiation

model is developed according to these results. It describes the changes of emissive power by three distinctive

stages. Reliability model is developed identically to radiation model. The influence of preliminary irradiation of

LEDs by gamma-quanta and fast neutrons on their further radiation resistance is observed. Preliminary irradiation

allows to significantly improve the radiation resistance of LEDs due to increase of ohmic contacts resistance and

radiation-stimulated reconstruction of the initial defect structure of the LED crystal. The represented “memory

effect” of the radiation influence is observed for other types of semiconductor devices. Choice of optimum

preliminary irradiation level of LEDs allows to increase the reliability of ohmic contacts, to reduce the rate of the

emissive power decrease and the probability of catastrophic failure.

Proposed technologies can be recommended for other types of semiconductor devices.

Title: Temperature-time superposition principle of metals in the design

of materials

Nina Selyutina | Saint-Petersburg State University, Russia

Abstract:

Based on the "temperature" relaxation model of plasticity, effects of the irreversible deformation

of metals that appear in the conditions of different temperature and rate regimes are studied. The

relaxation model of plasticity used is able to predict the anomalous phenomenon of increasing the

point of maximum stress together with the applied load, related to one of the temporary effects of

plastic deformation. Using a set of parameters of the plasticity relaxation model, it is possible to

predict various types of deformation curves that are realized on one material in a wide range of

strain rates. Dependencies of the structural-temporal characteristics on temperature for 2519А

aluminum alloys are constructed. The rate and temperature dependencies of the yield stress are

obtained. The appearance of the yield drop on the deformation dependence for 2519А aluminum

alloys at a temperature of -900C in the range of strain rates 1000–4000 1/s. The appearance of the

yield drop on the deformation dependence for 2519А aluminum alloys at a strain rate of 4000 1/s

in the temperature range from -90 to 3500C.

Title: Thermo- mechanical properties of filled composites across length

scales and coupled effects in second gradient thermoelasticity and heat

conductivity

Sergey Lurie | Institute of Applied Mechanics of RAS, Russia

Abstract:

The effective properties for filled composite under mechanical and temperature loading are modelled for the coupled thermo-mechanical

problem. We use the gradient theory of the coupled thermoelasticity and thermal conductivity, which is constructed on the basis of a

generalized model of media with defects fields. The variational model of the coupled thermodynamic for reversible and irreversible

processes is constructed by introducing non-integrable variational forms describing the spectrum of dissipation channels. As a particular

case a reversible model of coupled gradient thermoelasticity and thermal conductivity was formulated, where all non-classical modules

are defined through the well-known thermomechanical parameters. Adhesion mechanical and temperature surface interactions take into

account. We show that the of gradient thermoelastisity allow explain the existence of the possible effect of the stresses localization near

boundaries of the different phases in the composites which are important for the strength estimation. On the other side taking into

account the adhesion model make it possible to simulate simultaneously thermal resistance effects and describe both effects:

anomalously high effective thermal conductivity and extremely low effective thermal conductivity of micro-nanocomposites, depending

on the interfacial properties of the bounds.

We investigate the averaging tools for modelling of the effective properties of composites and compare the Mori-Tanaka method and

self-consistent Eshelby method. Using numerical tests we established that for the considered gradient problem only the self consistent

Eshelby method can be used to predict effective properties of composites with small size of inclusions, when the their diameter of has

the order of the scale parameter.

We found that for composites with micro- nanostructures, anomalous effects of percolation and separation of local heat fluxes in the

matrix has place, depending on the relative orientation of the force loading, heat flux vectors and size of inclusions.

Title: Multifunctional thin coatings based on Me-Al-N

(Zr1-xAlxN, Ti1-xAlxN)

Anna Kameneva | Perm National Research Polytechnic University, Russia

Abstract:

Single-component coatings with microstructure gradient of layers are difficult to obtain with complex functional properties. However,

this obstacle has been overcome with Me-Al-N coatings, where the each interleaved layers have a given values of microstructure, phase

and elemental composition. In addition, a variety of interleaved layers characteristics was employed that enable complex of tribological,

physico-mechanical, heat-resistant, crack-resistant, corrosion and adhesive properties. Multilayer thin coatings may be prepared by

almost any PVD methods, but an added benefit of pulse magnetron sputtering is low deposition process temperature, acceptable for tools

and friction pairs with a low tempering temperature. The studies and tests methodology of coatings are described in works.

Multifunctional coatings with the synergistic effect of stoichiometric layers have been developed. The common feature of all interleaved

nanostructured layers is their high physical and mechanical properties. Individual functionality of layers: the layer with the maximum

value of cubic phase, ZrN, exhibits the greatest anodic dissolution inhibition in 5%NaOH; two interleaved layers Zr1-хAlxN and Ti1-хAlxN

with maximum value of phases Ti3Al2N2 and Zr3AlN, respectively, - the greatest thermodynamic stability and wear resistance. The

achieved corrosion inhibition efficiency in 5%NaOH - over 3000 times, the current inhibition in the passive state -2000 times.

The best collection of wear, physical and mechanical properties is f=0.2, H=36 GPa, E=358 GPa, We=76%. This permits fabrication of

coatings Me-Al-N based on layers Zr1-хAlxN and Ti1-хAlxN suitable for the most demanding industry applications.

This work was carried out as part of the project “Control of the phase and elemental composition, structure and texture of the Ti1–xAlxN,

Zr1–xAlxN and Cr1–xAlxN layers of Me1–xAlxN multilayer coatings for obtaining them with complex of tribological, physico-mechanical,

heat-resistant, crack-resistant, corrosion and adhesive properties» with the support of the Federal state budget institution "Russian

Academy of Sciences".

Title: Cathodes temperature effect on their structural properties during

growth of Ti1-xAlxN thin coatings by cathodic arc evaporation

Natalia Kameneva | Perm National Research Polytechnic University, Russia

Abstract:

Effects of temperature and thermal-physical properties of cathodes on their structural properties are investigated for the case

of Ti1−xAlxN deposition by cathodic arc evaporation. Flowing or recirculated water was used for cathodes cooling. The

cathode erosion zone morphology as well as its failure was studied using the field emission electron microscope Ultra 55 with

EDAX microanalyzer. Generation of defects in the cathode erosion zone, as indicated by craters with microjets and

microdrops, forming on their boundaries, or microstreams, joining into rod-like structures, is found to be directly connected to

an increased cathodes temperature if they cooled down by recirculated water. It is concluded that the erosion in Ti cathode

spots is of non-thermal character. Diameter Ti craters change from 60...500 μm up to 350 ... 400 nm if Ti cathode is cooled by

flowing water during evaporation. Nanoscale equilibrium structures are formed in the process of primary recrystallization of

the Ti cathode. The results also show that of low-melting cathode Al is most sensitive to cooling water temperature. Change

of brittle fracture mechanism to viscous is observed as Al cathode temperature was decreased.

Complex research allowed to state, that non-equilibrium processes taking place on the cathode surfaces are similarly caused

by the dynamics of change in thermal conditions of processes occurring in them.

This work was carried out as part of the project “Control of the phase and elemental composition, structure and texture of the

Ti1–xAlxN, Zr1–xAlxN and Cr1–xAlxN layers of Me1–xAlxN multilayer coatings for obtaining them with complex of tribological,

physico-mechanical, heat-resistant, crack-resistant, corrosion and adhesive properties» with the support of the Federal state

budget institution "Russian Academy of Sciences".

Title: 2D oxygen diffusion in Ln tungstates synthesized by mechanical

activation

Vladislav Alexandrovich Sadykov | Boreskov Institute of Catalysis, Russia

Abstract:

Oxygen mobility is important characteristic of materials for hydrogen separation membranes due to various protonic

transport mechanisms and additional hydrogen yield related to water splitting reaction. This work aims at elucidating oxygen

transport features of Ln tungstates as promising materials for hydrogen separation membranes with high protonic

conductivity (~10-4

S/cm at 600 °C).

La27W5O55.5 (LWO), Nd5.5WO11.25-δ (NWO), Nd5.5W0.5Mo0.5O11.25-δ (NWMO) and (Nd5/6La1/6)5.5WO11.25-δ (NLWO) were

synthesized by the mechanical activation and sintered at 1100 °C. The materials were characterized by X-ray diffraction

(XRD) and transmission electron microscopy (TEM). Their oxygen mobility and surface reactivity were studied by isotope

exchange with C18

O2 in a flow reactor in temperature programmed and isothermal modes.

According to XRD data, the materials obtained were distorted double fluorites. LWO and NWO contained small amounts of

Ln2O3 admixture, while NWMO and NLWO were single-phase oxides. Extended defects such as grain boundaries, stacking

faults and surface steps/terraces were observed on TEM images. These features allow fast diffusion transport along grain

boundaries (DO ~ 10-6

cm2/s at 700 °C) and slower diffusion within grains’ bulk (DO ~ 10

-11, 10

-12 and 10

-13 cm

2/s at 700 °C

for fast, “middle” and slow diffusion channels) (2D diffusion). The model gives the best description of experimental data.

Calculated oxygen tracer diffusion coefficient and effective activation energy values are given

Hence, the features of Ln tungstates studied demonstrated their high potential for using in catalytic membrane reactors.

Different parts of this work were supported by Russian Scientific Foundation [Project 16-13-00112] and the budget project

#АААА-А17-117041110045-9 for Boreskov Institute of Catalysis.

Title: Performance of Polymer Membranes by Incorporation of Novel

Hybrid Carbon Modifiers and Its Application for Pervaporation and Gas

Separation

Alexandra Pulyalina | Saint Petersburg State University, Russia

Abstract:

Membrane separation processes are an essential part of scientific and technical progress in many areas. Currently, the

significant stage on the way of membrane processes application is the design of membranes with specific parameters as well

as high permeability and selectivity. The creation of hybrid materials is currently one of the most promising ways to modify

the properties of materials. Thus, the aim of this study was to expand the field of application of polymer membranes by

modifying them with novel carbon fillers of different architecture and nature, giving special attention to the study of the

physicochemical properties of new materials.

In the present work, the polymer matrixes were modified of several novel types of nanoparticles: a) endohedral fullerene,

encapsulated iron atom, and b) star-shaped macromolecules with polymer arms grafted onto fullerene C60.

The thermal stability and glass transition temperature of membranes were estimated by thermogravimetric analysis and

differential scanning calorimetry. Peculiarity of membrane structure was study by scanning electron microscopy and atomic

force microscopy. Physicochemical properties were determined such as density, fractional free volume, contact angles.

Transport properties were estimated by sorption, gas separation and pervaporation (or evaporation of liquid through

membrane).

The inclusion of new carbon modifiers contributes to a significant change in both the morphology and the physicochemical

properties of polymer films. It has been shown that the creation of hybrid membranes based on industrial aromatic

polyimide P84 with the introduction of endofullerenes improves transport properties in separation of a practically

significant methanol-methyl acetate mixture. The introduction of a star modifiers increase the efficiency of the gas

separation and purification of industrial solvents.

The enhanced pervaporation and gas separation performance is especially attractive for further studies in practical

application.

Title: Development of starch-based porphyrinoid photosensitizers

Idalina José Monteiro Gonçalves | CICECO - Aveiro Institute of Materials, Portugal

Abstract:

Porphyrinoid photosensitizers have been used in anti-infective strategies such as the photodynamic

antimicrobial therapy. Targeting to extend their application range, porphyrinoid photosensitizers

have been combined with polymer matrices that work as carriers and/or immobilization supports.

In this work, owing to develop a photosensitive carrier with biodegradable and biocompatible

properties, potato starch films doped with porphyrins were developed. The influence of

porphyrin’s concentration on the optical, photophysical, physicochemical, mechanical, and

biological properties of the obtained starch films was evaluated.

Porphyrins give rise to transparent starch films changing from yellowish to reddish, depending on

their native chemical structure. They also change the films’ water sensitivity and mechanical

performance. Moreover, due to their ability of generating reactive oxygen species, the developed

starch/porphyrin-based films inhibit the Gram-negative Escherichia coli bacterium growth.

Therefore, the incorporation of porphyrins into starch-based formulations reveals to be a suitable

strategy to develop newly photosensitive biomaterials with improved mechanical and water

tolerance performance.

Title: Magnetic-electric nanofibers by electrospinning

Bernardo Almeida | University of Minho, Portugal

Abstract:

Nanostructured ferromagnetic (magnetostrictive) - ferroelectric (piezoelectric) composite materials presenting a

coupling between the electric and magnetic degrees of freedom have been attracting much scientific and

technological interest. The elastic interaction between both phases induces a coupling behavior, the so called

magnetoelectric effect. When reduced to the nanoscale they can be used as building blocks for nanoelectronic

devices, with a coupling either to the electric polarization, to the magnetization, or to both. In this respect,

electrospinning is a low cost versatile method for producing fibers with diameters down to a few tens of

nanometers. Electrospinning is based on the high voltage jet drawing of a polymer solution or melt through a

capillary (needle) and has been shown to be a very convenient approach for nanofibers production of polar and

magnetic materials.

In this work, we have studied the synthesis of single phase and composite magnetic and multiferroic nanofibers by

electrospinning. For the magnetic phase, cobalt ferrite (CFO) was used, due to its high magnetostriction. CrI3, that

is a magnetic semiconductor, was also applied. Barium titanate (BTO) was used for the piezoelectric phase. The

corresponding sol-gel precursor solutions were mixed and subsequently spun to form single phase and composite

nanofibers with different concentrations. The X-ray diffraction studies show that the fibers are polycrystalline with

the tetragonal-BTO phase, cubic spinel CFO and C2/m CrI3 structure. The Raman spectra presented the

corresponding characteristic modes of the phases. Due to the phases nanoscopic grain sizes, the dielectric

measurements indicate that the ferroelectric transition of BTO is broadened, and its temperature is reduced, as the

BTO concentration decreases in the fibers. The measured temperature dependence of the magnetization indicates

the presence of ferromagnetism in the nanofibers. The influence of the magnetic phase content in the prepared

nanofibers, on their structural, electrical and magnetic properties will be presented.

Title: Stress Relaxation of Composites with Nano-enhanced Resin after Low

Velocity Impact Loads

Paulo Nobre Balbis dos Reis | University of Beira Interior, Portugal

Abstract:

Carbon fibre composites offer an attractive potential for reducing the weight of high-performance structures as consequence

of their high specific strength and stiffness. These materials offer excellent in-plane performance, but they have inferior

through-thickness properties, where, in case of impact loads, various types of damages can occur. These damages are very

dangerous because they are not easily detected visually, and they can affect significantly the residual properties and structural

integrity of those materials.

In order to improve the impact strength, literature suggests the nanoscale reinforcements as a good strategy, because they,

simultaneously, increase the mechanical performance and thermal properties. In terms of impact performance, the reduced

damage zone size observed is attributed to the increased stiffness and resistance to damage progression of the nanophased

laminates. However, polymer composites are prone to creep and stress relaxation as consequence of the inherent

viscoelasticity of the matrix phase, which is a great challenge when they are used in long-term applications.

Therefore, the main goal of this work is to study the stress relaxation behaviour of carbon laminates with an epoxy resin

enhanced by carbon nanofibers (CNF). Firstly, different percentages in weight were used to obtain the best flexural strength

and impact resistance. It was possible to conclude that, for both properties, the ideal amount was 0.75% by weight. For this

value, stress relaxation tests were performed, and the results obtained compared against the laminates with neat resin. In both

systems the stress decreases with the time, however, this decrease is more pronounced for laminates with neat resin. The same

tendency was observed for laminates subjected to impact, but the existence of impact damages in the composite increases the

overall relaxation. Therefore, more relaxation was observed for higher impact energies as a consequence of greater damages.

Finally, the results were fitted following the Kohlrausch-Williams-Watts equation, evidencing good accuracy of the model for

the stress relaxation time.

Title: Electric field-driven reconfigurable multistable topological defect

patterns

Samo Kralj | University of Maribor, Slovenia

Abstract:

Topological defects appear in symmetry breaking phase transitions and are ubiquitous throughout

Nature. As an ideal testbed for their study, nematic liquid crystals (NLCs) and their defect

configurations could be exploited in a rich variety of different technological applications. Here we

report on robust experimental and theoretical investigations in which an external electric field is

used to switch between pre-determined and stable line defect configurations in a thin NLC cell. We

enable a rich variety of defect structures in a NLC by implementing an in-house-developed Atomic

Force Microscope nanolithography method. We scribe a 4x4 lattice-like template of integer-

strength surface point defects of alternating sign. This configuration enables 18 different stable

“letters” of an “alphabet”, in which each letter consists of a pattern of chargeless defect lines

connecting neighbouring surface-imposed defects. One can reversibly switch among different

letters by imposing an appropriate external electric field, such that the new letter remains stable

even when the field is switched off. We demonstrate this proof-of-concept “remote” rewiring both

experimentally and numerically. The demonstrated mechanism may lead to a variety of

applications, such as multistable optical displays and rewirable nanowires. Moreover, these defects

may be classical analogs of intriguing Majorana particles, thus providing insight into the

fundamental behaviour of Nature.

Title: Chromium doped alumina usability in dosimetry

Ernests Einbergs | University of Latvia

Abstract:

Study of radiation induced electronic processes in materials precipitated a now widespread

material science field called dosimetry, which specializes in ionizing radiation detection and

quantification. The performance of most materials used for dosimetry applications is mainly

governed by the impurity ions in the crystalline lattice coupled with lattice imperfections around

them (with a meaningful difference in size or oxidation state compared to host ions). In this study,

we explored augmentation of luminescent properties of alumina caused by chromium ion doping,

with a goal of increasing the quantity of charge carrier traps in the crystalline lattice. Porous

microparticles synthesized with sol-gel method displayed higher thermoluminescent

response compared to that of a single crystalline ruby. We have found that 0.2 wt% of

yielded the highest XRL and TSL readout of all the studied additive concentrations added to

alumina during synthesis. Our results display a promising use case for Cr doped alumina.

Conducted study provides information on a new alternative to already existing ionizing radiation

dosimetric materials with desirable physical and chemical properties as well as relatively lowers

manufacturing cost.

Title: Nature of chemical elements

Henadzi Filipenka | Independent researcher

Abstract:

The main problem is that using X-ray to determine the crystal lattices of different materials, and

why they are such and not others is not yet known. For example, copper crystallizes in the fcc

lattice, and iron in the bcc, which upon heating becomes fcc and this transition is used in the heat

treatment of steels.

The literature cites many factors affecting the crystallization of atoms, so I decided to remove

them as much as possible, and the metal model in the article, let’s say, ideal, i.e. all atoms are the

same (pure metal) without inclusions, without implants, without defects, etc., using the Hall effect

and other data on the properties of the elements, as well as Ashcroft and Mermin's calculations -

the main determining factor for the type of lattice was the external electrons of the atom’s core or

ion that turned into as a result of the transfer of part of the electrons of the atom to the conduction

band of the crystal.

It turned out that the metal bond is caused not only by the socialization of electrons, but also by

the external electrons of the atomic cores, which determine directivity or type of crystal lattice.

A change in the type of metal lattice can be associated with the transition of an electron into the

conduction band or its return from this band.

Title: Graphene Coatings: A Disruptive Approach to Durable Corrosion

Resistance

Raman Singh | Monash University, Australia

Abstract:

Corrosion and its mitigation costs dearly (any developed economy loses 3-4% of GDP due to corrosion, which

translates to ~$250b to annual loss USA). In spite of traditional approaches of corrosion mitigation (e.g., use of

corrosion resistance alloys such as stainless steels and coatings), loss of infrastructure due to corrosion continues

to be a vexing problem. So, it is technologically as well as commercially attractive to explore disruptive

approaches for durable corrosion resistance.

Graphene has triggered unprecedented research excitement for its exceptional characteristics. The most relevant

properties of graphene as corrosion resistance barrier are its remarkable chemical inertness and impermeability

and toughness, i.e., the requirements of an ideal surface barrier coating for corrosion resistance. However, the

extent of corrosion resistance has been found to vary considerably in different studies. The author’s group has

demonstrated an ultra-thin graphene coating to improve corrosion resistance of copper by two orders of

magnitude in an aggressive chloride solution (similar to sea-water). In contrast, other reports suggest the graphene

coating to actually enhance corrosion rate of copper, particularly during extended exposures. Authors group has

investigated the reasons for such contrast in corrosion resistance due to graphene coating as reported by different

researchers. On the basis of the findings, author’s group has succeeded in demonstration of durable corrosion

resistance as result of development of suitable graphene coating. The presentation will also assess the challenges

in developing corrosion resistant graphene coating on most common engineering alloys, such as mild steel, and

presents results demonstrating circumvention of these challenges.

Title: Large scale platforms for energy photoelectrocatalysis at Silicon-

based nanomaterials

Ahmed Farid Halima | RMIT University, Australia

Abstract:

Realizing a green economy envisages solar-to-fuel (STF) conversion as the promising pathway for

reliable energy storage and utilization. To facilitate this, efficient catalysts are optimized for

nanostructured semiconductors towards highly performing devices. Silicon is regarded an

advantageous photoelectrode support for a range of fuel reactions, provided enhancement to its

chemical stability. One challenge prevails for nanostructured Silicon-based devices; to identify

scalable and reliable chemical fabrication methods, especially for noble or earth-abundant metal

catalysts (such as Pt, Pd, Au, Ag, Cu) for respective/simultaneous photocatalysis of Hydrogen or

Carbon Dioxide. The work presented herein demonstrates detailed investigations for cost-effective,

reliable and scalable nanofabrication processes, and display device functionality/efficiency

characterization in STF conversion.

Title: Circular Materials for a Circular Economy

Maryam Naebe | Deakin University, Australia

Abstract:

Materials designed for multiple life cycles are required for a circular economy. With constant

novelty and evolution in material science and engineering, no longer we can keep adding

functionality via tailored complexity for a single life. Superior fit-for-purpose materials must retain

maximal value through all their subsequent applications. Much effort has been expended on how

to best recycle, reuse and re-purpose our existing materials. This talk will focus on finding more

sustainable solutions to build multiple life functionality into new materials. While the focus is on

designing out textiles waste, a several case studies will be discussed to show case the creating

novel ways to maximise value from waste.

Title: Shape-memory Polymers for Biomedical Applications

Mitsuhiro Ebara | National Institute for Materials Science (NIMS), Japan

Abstract:

Shape-memory polymers (SMPs), which have the ability to return from a deformed state to their

original shape after receiving an external stimulus, have drawn much attention during

fundamental research into practical applications. We have been developing a thermally induced

SMPs switch with a Tm at a biologically relevant temperature using cross- -

caprolactone) (PCL). PCL is an important biocompatible and biodegradable synthetic polymer

and has been approved for biomedical applications by the US Food and Drug Administration

(FDA). In recent years, our laboratory developed SMPs that respond not only to heat but also

light and magnetic field. We also succeeded in providing shape memory properties with

applications such as nanofiber meshes, nanoparticles and 3-dimentional scaffold materials.

Title: Global trends in nanofiber innovations and growing business

opportunities

Muzamil Khatri | Shinshu University, Japan

Abstract:

Nanomaterials are getting great deal of interest in nanotechnology, specifically nanofibers among

all such materials has emerged with greater impact in recent technological development, because

of its multifunctional properties such as lighter weight, finer diameter and breathability. In

general, the talk will give audience insight into the Nanofibers as a new problem-solving entrant

into current era that include biosensors, tissue engineering, drug delivery, nerve regenerations and

other environmental and medical applications. A broader perspective will be discussed about

Nanofiber production and challenges. Recently, utilization of nanofibers has been considered for

various practical applications which created business opportunities worldwide. Our recent journey

to development of innovative different nanofiber-based products and transforming into viable

commercial products will be presented. We have started nanofiber production for business in

Pakistan and Japan.

Title: Artificial blood vessel scaffolds of biodegradable co-polyester

nanofibers for cardiovascular regeneration

Sofia El-Ghazali | Shinshu University, Japan

Abstract:

The isosorbide bio-based polyesters Poly (1,4-Cyclohexane Dimethylene Isosorbide

Terephthalate) (PICT) and Poly (Ethylene Glycol 1,4-Cyclohexane Dimethylene Isosorbide

Terephthalate) (PEICT) are being widely investigated with a view to exploring more functional

and biomedical applications. However, nanofibers made of PICT/PEICT blend (BLEND) have

not been manufactured yet. Herein, we report three-dimensional (3D) artificial blood vessels

(ABV) using PICT, PEICT and BLEND nanofibers with three different cross-sectional diameters

≤2 mm which remain a big challenge. Scanning Electron Microscopy (SEM) showed smooth

morphology of the ABVs and Atomic Force Microscopy (AFM) clearly showed compacted

nanofibers on the surface of BLEND which has more potential to hold the human breast cell

compared to PICT and PEICT. Fourier Transform Infra-Red spectrum (FTIR) showed that no

significant difference was found between PEICT and the BLEND chemical structure. Enzymatic

degradation showed the higher degradation rate of BLEND compared to PICT and PEICT. The

ABV of the BLEND has a capability to adopt the tensile properties of both PICT (stress) and

PEICT (strain) and it showed intermediate tensile strength. The results demonstrated that the

human breast cell can be cultured successfully on the BLEND.

Title: Viscoelastic properties of Chalcomenite glasses

Haihui Ruan | The Hong Kong Polytechnic University, Hong Kong

Abstract:

Chalcogenide glass (ChG) is an alternative material to replace single‐crystal germanium in

manufacturing thermal imaging lenses owing to the excellent formability through precision glass

molding (PGM). The deformation mechanisms of these glasses at the molding temperature

involve elasticity, plasticity, and viscous flow, which call for a new theoretical model to assist the

design of PGM process. Through a comparative study by using the impulse excitation technique,

we discuss the fundamental difference between oxide and chalcogenide glasses in terms of their

viscoelastic response. For PGM, we characterize the thermo‐mechanical properties of

Ge22Se58As20 at the temperature above its softening point and establishes a new

elastic‐viscoplasticity model to describe its thermo‐mechanical behaviors, which are

parameterized based on cylindrical compression tests. The new constitutive model is then

implemented in finite element simulation of PGM, and the agreement of displacement‐time

curves between experimental and simulation results exhibits the validity of the proposed model.

Title: Giant shift upon strain on the fluorescence spectrum of VNNB color

centers in h-BN

Song Li | City University of Hong Kong, Hong Kong

Abstract:

We study the effect of strain on the physical properties of the nitrogen antisite-vacancy pair in

hexagonal boron nitride (h-BN), a color center that may be employed as a quantum bit in a two-

dimensional material. With group theory and ab-initio analysis we show that strong electron-

phonon coupling plays a key role in the optical activation of this color center. We find a giant shift

on the zero-phonon-line (ZPL) emission of the nitrogen antisite-vacancy pair defect upon applying

strain that is typical of h-BN samples. Our results provide a plausible explanation for the

experimental observation of quantum emitters with similar optical properties but widely scattered

ZPL wavelengths and the experimentally observed dependence of the ZPL on the strain.

(a) The geometry of VNNB defect in the ground state. Top view (left) and side view (right). The

dashed circle denotes the impurity nitrogen atom. The defect is outof-plane and exhibits C1h

symmetry. (b) The a1, b2 and b0 2 defect states in C2v geometry. (c) The defect states in the C1h

symmetry with the same energy order as those in (b). As can be seen the a1 and b2 wavefunctions

in C2v symmetry are mixed in C1h symmetry.

Title: Inventive Pressure-Mediated Electrophoretic Deposition of

Antibiotic-Laden Polymer Nanocomposite Films for Surface Modification of

Titanium Implants

Mojtaba Mansoorianfar | Nanjing Forestry University, China

Abstract:

We present, for the first time, a novel procedure based on electrophoretic (EPD) under isostatic

pressure to control the deposition rate of multicomponent thin films. A uniform composite thin

film (thickness ~ 100 nm) could be deposited on a Ti-based substrate under low pressure of 10-2

mbar (LP), atmospheric pressure (AP), and high pressure of 5 bar (HP). Surprisingly, results

showed that increasing pressure on the suspension during electrophoretic (PM-EPD) had

increasing effect on the current density within time evolution. The results of TGA showed that at

AP larger amounts of CNF and alginate were deposited on the surface compared to LP or HP.

However, highly amount of BG could be deposited at LP. Moreover, FTIR, and SEM

characterizations proved that the deposition rate of film increases at AP; it enhances the coating

thickening. While the amount of released drug from the surface of samples synthesized in HP was

higher than AP and LP. As a result applying vacuum eliminated nanobubbles inside the

composite and decreased the amount of loaded drug. By altering the pressure to vacuum, pH

decreased to near 8 which decreased OH- ion concentration, zeta potential of suspension, and

deposition rate of coating. While rising pressure traps nanobubbles inside the composite, increase

resistance of layer and prevent thickening of coating. These bubble-like holes play as drug

storage. In vitro bioactivity assessment using MTT assay and 3-days drug releasing from the

composite films exhibited enhancement in biocompatibility, viability and promotion in drug

releasing by increasing pressure.

Title: Semiconducting Polymers for High-Performance Field-Effect

Transistors

Yunqi Liu | Chinese Academy of Sciences, China

Abstract:

During the past several years, impressive progresses have been made in organic field-effect

transistors (OFETs), particularly in conjugated polymer-based FETs. A few high-performance

polymers-based FETs have been developed with a remarkable mobility of more than 10 cm2 V

−1

s−1

, which provides a promising opportunity for applications in flexible displays and wearable

devices.

In this presentation, several design ideas for high-performance semiconducting polymers are put

forward and discussed. Following these guidelines a few copolymers with D−A structures

exhibiting p-tpye, n-type and ambipolar behaviour were synthesized. Their transporting

properties in FETs were measured and studied.

Title: Distribution of Multimaterials with Nanoscale Resolution guided by

Microtopographic Substrate

Jia Zhang | Harbin Institute of Technology, China

Abstract:

Distribution of multi-materials at arbitrary positions with nanoscale precision and over large area

substrates is essential to future advances in functional graded materials. Such stringent

requirements are highly beyond the reach of current techniques although the newly developed 3D

printing technologies are addressed. Here, a radial gradient circle array film is fabricated by using

microtopographic substrate guided with the distribution accuracy up to ~18 nm. A mathematical

model is developed to guide the distribution of position, size, shape, type of materials on an

arbitrary section for the given morphology of substrate. The periodic electrical and mechanical

properties of the radial gradient circle film are identified, which will be benefit for further

functionalization and applications, such as gradient refractive index lens, microcoils, local

catalysts.

Abstract:

Energy conversion such as CO2 reduction to fuel and water splitting with solar energy needs

catalysts with high activity and good stability. Nanostructured materials are promising for future

application in this research area. Although there are a large number of related publications, the

issue about the catalysts has not been well addressed. So far, copper and copper oxide materials

have been widely used as the catalysts for electrochemical, photochemical and

photoelectronchemical CO2 reduction. Additionally, metal copper as a good conductive material

works well for electrode substrate. In order to take advantage of copper and copper oxide

materials, we have prepared nanostructured copper and copper oxides based materials for

photochemical, electrochemical and photoelectrochemical CO2 reduction to organic fuel.

Besides, copper nanowires have been used as the substrate to fabricate a highly efficient three-

dimensional (3D) bulk catalysts of core-shell structure, in which NiFe and CoFe layered double

hydroxide (LDH) nanosheets were grown on the substrate cores supported on Cu foams, toward

overall water splitting. The preliminary conclusion can be reached that after modification and

deposition, copper oxides are prospective for photochemical and photoelectrochemical CO2

reduction under solar light and the 3D core-shell electrocatalysts significantly advance the study

for large-scale practical water electrolysis.

Title: Copper and Copper Oxides Based Materials for Solar Energy

Conversion

Ying Yu | Central China Normal University, China

Title: Nanotribology of metals and alloys

Arnaud Caron | Korea University of Technology and Education, Republic of Korea

Abstract:

In this work we apply atomic force microscopy to investigate the response of single asperity

sliding contacts between AFM tips and metals and alloys. As involving at least two bodies the

friction response of a tribological system is complex and may include chemical, structural and

mechanical effects.

We find that sliding friction is both affected by chemical and structural effects. Chemical

contributions were tested by changing the metallurgical affinity between the involved metallic

couples. For non-affine metallurgical partners sliding friction is governed by simple shearing while

the sliding response of affine partners is governed by adhesion and local alloying. In contrast we

find that the sliding friction of an amorphous alloy is strongly affected by its structural relaxation

state. Further, metals and alloys wear in unlubricated condition closely relate to their plastic

deformation. We investigated the tribological response of different fcc metals and their alloys: Au,

Ag, Ni, Ag-Cu eutectic alloys and age hardening Al-Cu alloys. While wear and ploughing friction

coefficient of pure fcc metals scale with their hardness, we demonstrate how the tribology of

metallic alloys varies with their microstructural length scale. Further, investigating the tribological

response of single asperity contacts allows monitoring the mechanisms involved in friction and

wear.

Title: The Precise Determination of the Johnson-Cook Material and

Damage Model

Barış ÇETİN | Abdullah Gül University, Turkey

Abstract:

Al 7068-T651 alloy is one of the recently developed materials used mostly in the defense industry

due to its high strength, toughness and low weight compared steels. The aim of this study is to

identify the Johnson-Cook (J-C) material model parameters, the accurate Johnson-Cook (J-C)

damage parameters, D1, D2 and D3 of the Al 7068-T651 alloy for Finite Elemental Analysis

(FEA) based simulation techniques, together with other damage parameters, D4 and D5. In order

to determine D1, D2 and D3 tensile tests were conducted on notched and smooth specimens at

medium strain rate, 100 s-1, and tests were repeated 7 times to ensure the consistency of the results

both in the rolling direction and perpendicular to the rolling direction. To determine D4 and D5,

further tensile tests were conducted on specimens at high strain rate (102 s-1) and temperature

(300 °C) by means of Gleeble Thermal mechanical Physical Simulation system. The final areas of

fractured specimens were calculated through optical microscopy. The effects of stress triaxiality

factor, rolling direction, strain rate and temperature on the mechanical properties of Al 7068-T651

alloy were also investigated. Damage parameters were calculated via Levenberg-Marquardt

optimization method. From all the aforementioned experimental work, J-C material model

parameters were also determined. In this article, J-C damage model constants, based on maximum

and minimum equivalent strain values, were also reported which can be utilized for the simulation

of different applications.

Title: Physico-chemical Effects of Gelatin Addition in

Carboxymethylcellulose and Calcium Phosphate Cement-based

Nanocomposites

Esra Guben | Boğaziçi University, Turkey

Abstract:

In this study, a nanocomposite was obtained with carboxymethylcellulose (CMC) and gelatin (GEL) as the liquid

phase and CaP-based powder as the solid phase. The effect of addition of 0, 5, 10, 20 wt% of GEL was investigated

on the physical properties of the nanocomposites. Physico-chemical characteristics were determined by using

Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM) and mechanical tests.

Besides, the swelling analysis was performed after 1, 8, 16, 24 and 48 hours and the degradation of samples was

studied after 7 and 14 days. According to FTIR results, physical interaction between CMC and GEL with H

bonding was observed from the peak at 3288cm-1. GEL structure was disrupted and this may cause an increase in

the interaction between CMC and GEL molecules which was observed from the band at 1600-1400 cm-1. After

mixing of the phases, there is a dissolution-precipitation mechanism for CaP and it starts with the interaction

between COO- groups on CMC and Ca2+ molecules from CaP. Ca2+ molecules create attraction sites for PO43-

molecules. As a result, ions accumulate as hydroxyapatite-like structures. A homogenous and porous

microstructure was observed by using SEM. Mechanical tests showed that GEL improved the strength of the

samples up to 20 wt%. The addition of 20 wt% of GEL decreased the mechanical properties. Maximum

compressive strength values were found up to approximately 6 MPa. The swelling capacity decreased with GEL

addition and 10wt% GEL samples had the lowest swelling which was approximately 28%. Lastly, the highest

degradation rate was found in 10wt% GEL samples and further GEL addition reduced the degradation rate.

However, at the end of 14 days, nanocomposites with GEL had a higher degradation rate than the control group. In

conclusion, GEL addition in the nanocomposites enhances the physical properties for potential biomedical

applications.

Title: Characterization of sodium caseinate/Hydroxypropyl methylcellulose

concentrated emulsions: Effect of mixing ratio, concentration and wax

addition

Kooshan Nayebzadeh | Shahid Beheshti University of Medical Sciences

Abstract:

The effects of mixing ratio (1:1, 2:1 and 4:1 sodium caseinate:hydroxypropyl methylcellulose,

CN:HPMC), HPMC concentration (0, 0.6 and 1.2 wt%), CN concentration (0, 1.25 and 2.5) and

beeswax addition (3%) on the physical stability of concentrated O/W emulsions (φoil = 0.6) were

investigated. The emulsion stability, particle size distribution, microstructure and rheological

properties were measured. The results showed that emulsion stability was significantly improved

with increasing HPMC concentration (pvalue < 0.05). The samples with the highest and the

lowest biopolymers concentration at mixing ratio of 2:1 had the highest and the lowest ESI (98%

and 48%), respectively. In addition, the most stable sample had the smallest volume mean

diameter and approximately desirable rheological properties. The beeswax addition considerably

improved rheological properties whereas increased droplets diameter and emulsion instability. In

summary, concentrated emulsions stabilized by caseinate/Hydroxypropyl methylcellulose

complex may be useful for application in particular food such as heavy cream, mayonnaise,

oleogels and pharmaceutical products.

Title: Highly efficient removal of Rhodamine B by MIL-100(Fe)

@Fe3O4@AC

Asma Hamedi | Yazd University

Abstract:

A new magnetic nanocomposite called MIL-100(Fe) @Fe3O4@AC was synthesized by the

hydrothermal method as a stable adsorbent for the removal of Rhodamine B (RhB) dye from

aqueous medium. The size of these nanocomposite is about 30–50 nm. Compared with activated

charcoal (AC) and magnetic activated charcoal (Fe3O4@AC) nanoparticles, the surface area of

MIL-100(Fe) @Fe3O4@AC were eminently increased while the magnetic property of this

adsorbent was decreased. The surface area of AC, Fe3O4@AC, and MIL-100(Fe) @Fe3O4@AC

was 121, 351, and 620 m2/g, respectively. The magnetic and thermal property, chemical structure,

and morphology of the MIL-100(Fe) @Fe3O4@AC were considered by vibrating sample

magnetometer (VSM), thermogravimetric analysis (TGA), zeta potential, X-ray di_raction (XRD),

Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), Brunner-

Emmet-Teller (BET), and transmission electron microscopy (TEM) analyses. The relatively high

adsorption capacity was obtained at about 769.23 mg/g compared to other adsorbents to eliminate

RhB dye from the aqueous solution within 40 min. Studies of adsorption kinetics and isotherms

showed that RhB adsorption conformed the Langmuir isotherm model and the pseudo second-

order kinetic model. Thermodynamic amounts depicted that the RhB adsorption was spontaneous

and exothermic process. In addition, the obtained nanocomposite exhibited good reusability after

several cycles. All experimental results showed that MIL-100(Fe) @Fe3O4@AC could be a

prospective sorbent for the treatment of dye wastewater.

Title: Polymeric sustained release formulations containing bevacizumab

intended for choroidal neovascularization

Reyhaneh Varshochian| Shahid Beheshti University of Medical Sciences

Abstract:

Distinctive features of polymers including Non-toxicity, biocompatibility and diversity in

physicochemical properties confer them favorable potentials as carriers in ocular drug deliveries.

In posterior segment drug therapies, the short half-life and repeated intra-ocular injections which

commonly cause minor to sever adverse effects are still among the serious issues. To address this

problem, we developed various sustained release formulations containing bevacizumab aimed at

choroidal neovascularization (CNV) treatment. Nanoparticles, implant and in situ forming gel were

designed and evaluated in vitro and in vivo. Vitreous samples were collected following the

intravitreal injections in rabbits, the drug concentration was assayed by VEGF coated ELISA and

intraocular pharmacokinetic parameters were calculated. Fluorescent dye loaded systems were

used to investigate the persistence of the formulations in the posterior segment. Due to the in vitro

results sustained profiles of release with different slops were observed in various formulations

which amongst nanoparticles embedded in the in situ gel showed the most long-acting release

during the test span. In vivo results indicated an elevated vitreous mean residence time (MRT) and

decreased vitreous clearance. In conclusion, the prepared polymeric structures provided sustained

release bevacizumab delivery formulations which can introduce a promising ocular drug deliveries

intended for posterior segment treatments.

Title: Gravity Puzzle, Akin Faith Trouble

Housam Safadi | Safadi Bureu, Damascus

Abstract:

Physicists ,in this study, maight find some answers to gravity puzzles out of equations and

accelerators; it is of great low-cost! In my book “How the Abrahamic Books Embed M-theory and

Black Holes “,I demonstrate “Heavens” branes’ of M-theory, and Black Hole analogous The

Books’ Hell. In this study , I am trying to marry “Gravity” with The Books’ angels. Blessing this

marriage, I should examine their compatibility.

Gravity and angels share these properties:

1- Being messengers

2- Carry energy and oscillate

3- Exhibit Motion

4- Supergravity

5- Black hole gravity

6- Water Gravity

Title: Structure and Thermal properties of Ga2Se3 Nanoparticles

Mustafa Saeed Omar | University of Salahaddin-Erbil

Abstract:

The formula which contains the maximum increase of mean bond length dmean, melting entropy Sm and critical

particles radius rc is used to calculate lattice volume in nanoscale size crystals of Ga2Se3 from group compounds

III2VI3. rc is calculated from the values of the first surface atomic layer height symboled by h. The surface first

layer height of atoms h is calculated according to the fitting relation, h=1.429 dmean for bulk state. For Ga2Se3

values of h and melting entropy Sm are 0.336nm 30.179(Jg-atom-1K-1) respectively. The size dependent mean

bond length can be calculated using the relation [dmean(r)=h-∆ d(r)], the size dependent lattice parameter a(r) can

be calculated from the relation dmean(r)=[a(r)/4].31/2, and then the size dependent lattice volume V(r). The bulk

state for this relation as (r go to infinity) is used to calculate values of dmean(r). The increase of lattice size reaches

to about three times of its bulk state when r reaches rc, for Ga2Se3 its value reaches to 77.6 A3 compared to that of

the bulk (19.97 A3). From the values of V(r) calculated according to the information above, and by using the

modified model (Omar 2016) the nanoscale size dependence of melting temperature Tm(r) are calculated. The

melting temperature decreases with the nanoparticles size reduction and become zero when its radius reaches to its

critical value (rc)

Bulk melting temperature for Ga2Se3 for example, have values of 1293 K. From the size dependent melting

temperature T(r) and mean bond length dmean(r) , the size dependent lattice thermal expansion LTE(r) are

calculated according to the modified relation reported by (Omar 2016). Lattice thermal expansion “LTE” decreases

with the decrease of nanoparticles size and reaches to a minimum value as r approaches down to about 5nm, see

figure 1 for Ga2Se3

Title: Determination of the strength of dislocations` obstacles in planar impact

experiments

Eugene Zaretsky | Ben Gurion University of the Negev

Abstract:

Planar impact loading generates in solids two waves, the plastic wave and the elastic wave. Since

the propagation velocity of the latter is higher it moves through an unperturbed material interacting

in passing with material’s defects. As result, the shear

decays with propagation distance h

passage of an obstacle by dislocation - the decay is fast, the dislocation glide is the over-barrier

glide and only phonon viscous drag opposes the dislocations’ motion. As soon as decaying stress

el - the rate of the decay decreases drastically; due to the insufficiency of

the stress the dislocation should wait in front of the obstacle for the appearance of a proper thermal

el(h) has a distinct

-obstacle interaction.

Based on this approach the strengthening effects of NiAl precipitates produced in PH 13-8 Mo

stainless steel after quenching and ageing of different durations were established. Moreover, the

cutting the precipitates by moving dislocations, were found to be in an excellent agreement with

transmission electron microscopy observations.

Title: Nitrate Removal from Drinking Water by Sodium Thiosulfate and its

impact on health

Adel abdelhalim alsalaymeh | Water Quality Laboratory, Hebron Municipality

Abstract:

Introduction: Nitrate is a stable and highly soluble ion with a low potential for precipitation or adsorption, nitrate is seldom

present in geological formations and therefore contamination due to nitrate is mainly attributed to anthropogenic sources.

Pollution of water resources by nitrate occurs due to many reasons, which has effects on environment and human health so

nitrate removal from drinking water is necessary.

Methodology: 1.09% solution of sodium thiosulfate was prepared by dissolving pills (taken from Hach vials) in 100 ml of

deionized water. Different doses of sodium thiosulfate solution (0.1, 0.3, 0.5,1,2,3, and 5ml) were added to 100 ml of water to

be treated to determine the lowest dose that give high percentage of nitrate removal. The lowest contact time was determined

by adding the lowest dose that gives high percentage of nitrate removal. Nitrate level was determined by cadmium reduction

method (Hach method no. 8039) using nitraVer 5 high range powder pillow nitrate reagent. The effect of adding sodium

thiosulfate on the level of TDS, alkalinity, sulphate and total hardness was studied after one-hour contact time. TDS was

determined by Hach CO 150 conductivity meter. Alkalinity was determined by Hach method no. 8203(phenolphthalein and

total method). Sulfate was determined by Hach method no. 8051. Total hardness was determined by Hach test kit 20-400mg/l

Model 5-EPMG-L Cat. No.1454-01. Literature was reviewed to determine the effect of sodium thiosulfate on human health.

Results: There is decrease in the level of nitrate and increase in the level of electrical conductivity and total dissolved

substances by increasing the dose of 1.09% solution of sodium thiosulfate. 72% reduction in nitrate level was noticed when

1ml of 1.09% solution of sodium thiosulfate More than two third of nitrate level (69%) was removed after 30 minutes of

contact time between sodium thiosulfate and raw water.

Conclusions: Removal of nitrate from drinking water by adding 1.09 % of sodium thiosulfate is easy and cost effective

method and removes high percentage of nitrate.

Further research is needed to confirm that addition of sodium thiosulfate to drinking water is safe process.

Title: Temperature Dependent Interplay between Emitting Species in

Highly Ordered Poly(thiophenes) as Revealed by Optical Spectroscopy

John Onyango Agumba | Jaramogi Oginga Odinga University of Science and Technology

Abstract:

In this study, the temperature dependent PL spectra measurement has provided us a feasible means to elucidate

the nature of the emissive species and the melt transitions in different polythiophenes. The effects of thermal

fluctuation on different phases of a bulky substituted poly (3-(2, 5-dioctylphenyl) thiophene) (PDOPT) and Poly(3

hexylthiopne-2 5diyl) (P3HT) have been systematically investigated using photoluminescence spectroscopy. This

has been achieved by performing in-situ temperature dependent photoluminescence measurements followed by

detailed spectral analysis. For PDOPT, the intensities of the emitted species varied as a function of temperature

that determine degrees of order. Well-ordered crystals emitted strongly in lower energies as opposed to less

ordered films and spherulitic crystals. From the deconvoluted PL spectra, it was revealed that, the emitting

energy bands remained constant with shift of intensity with ordered crystals emitting strongly in higher

wavelengths as compared to their disordered counterparts that emit strongly in lower wavelengths. On the other

hand, for P3HT, the spectrally resolved PL lineshapes through multipeak Gaussian functions simulating 0-0, 0-1,

0-n peaks have revealed multiple vibrational replicas yielding different emitting species (states). We suggest that

the temperature dependent vibronic progressions arise from different electronic origins i.e. different species

(fluorophores) due to multiple crystalline polymorphs within the crystal with varied coupling of the excited states.

From our observation, we conclude that it is not sufficient to invoke only the intramolecular interactions in

explaining the nature of PL spectra of highly ordered polythiophenes which are widely dominated by both

interchain and intrachain interactions.

Title: Removal of soluble carboxylic acids in transformer insulating

fluids using membrane separation

Oumert Safiddine Leila| The University of Blida

Abstract:

From an environmental perspective, petroleum-based aged oils removed from power transformers are source of

several pollutants and therefore cannot be disposed of without due care. The degradation of oil in in-service

transformers is due to various factors concurrent with the operation of the units over several years. Oxidation of

oil insulation initiate premature aging and introduces carboxylic acids with eventual increase in oil acidity, which

hampers the properties of the oil. In this paper, a membrane separation technology-based purification process for

aged insulation oil has been evaluated and reported. The intent of the present study is to eliminate carboxylic

acids, dissolved decay contents and other colloidal contamination present in aged oil and enhance the useful life

of oil. The potential of the membrane treatment process has been demonstrated using Ultraviolet Visible Infrared

Spectroscopy and Fourier Transform Infrared Spectroscopy diagnostic measurements for oil and membrane.

Additionally, membrane retention properties like membrane flux, retention coefficient, sorption time and

membrane mass have been analyzed to understand the treatment process. To further evaluate the performance of

the membrane and effectiveness of the treatment process, acidity measurement of the oil before and after filtration

have been also reported. The proposed membrane purification method has been tested for Algerian utility in-

service oil samples. It is inferred that, membrane filtration method is a simple and effective method for treatment

of aged oils and aids in extending the remnant life of the oil. The procedure is economically attractive because of

increasing prices for transformer liquids, cost effective and environmentally sounds.

Abstract:

Quest for new materials with higher thermoelectric figure of merit is on the rise due to global

demand for green and renewable energy sources. This is a gradual deviation from the

conventional fossil energy sources. Energy problem across the globe is dynamic and it varies

from one clime to another. In addressing the quantum demand for these new materials,

experimentalist are limited to certain domain of materials classes like chalcogenides,

skutterudites, and Zintl phases in their search for newer materials. Computational data from

theorist usually guide the chemistry of experimentalist in their search and synthesis of new

materials. However, Ab initio computation of thermoelectric properties remains herculean and

computational intensive. We present a machine learning experimental design model to predict

thermoelectric figure of merit, ZT from chemical formula. Datasets from citrine and materials

project were obtained using APIs, The model prediction of figure of merit were comparable with

experimental results. Maximum likelihood of improvement criteria was used with normal

distribution to demonstrate highest likelihood of improvement. The expected thermoelectric

figure of merit for AgCrSe2 and Tl0.01Pb0.99Te are below the highest value in our dataset, hence

they are biased towards materials with high model uncertainty. New experiments are proposed for

five materials based on combination of exploring high-uncertainty candidates and Maximum

likelihood of improvement over parameter space.

Title: Model based Machine Learning Experimental Design to Predict

Thermoelectric Figure of Merit

Akinola S. Olayinka | Edo University Iyamho

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