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Nanotech Insights

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  • Graphene Derived Porous Carbon for CO2 Capture

    Mass Production of High-Quality Graphene: Global Patent Analysis

    ALD Coatings for Multifunctional Applications

    Fighting Diabetes with Nanotechnology

    Nano S&T: Indian Scenario

    A quarterly newsletter dedicated to nanoscience and nanotechnologyA quarterly newsletter dedicated to nanoscience and nanotechnology

    Insights

    April 2012 Volume 3 Issue 2 RNI No. APENG/2010/34023ISSN 2229-5992

    NanotechNanotech

    Conductive Inks & Paints

    Polymer Fillers Battery Electrodes Supercapacitors

    Sensors

    Touch Screens Smart Windows

    Flexible LCDs & OLEDs Solar Cells

    Research Purpose

    FETs Interconnects

    NEMs Composites

    Polymer Fillers Transparant Electrodes

    Sensors

    Transistors Circuits

    Interconnects Memory

    Semiconductors

    Small Scale Production

    High Cost

    High Quality

    Uneven Films

    Epitaxial Growth on SiC

    Thin films (>

    50 m)

    CVD (on, Ni, Cu, Co) Thin films (75 cm)

    Microm

    echanical

    Exfoliation

    Flakes (5 to 100m)

    Carbon Nanotube Unzipping

    Nanoribbons (few microns)Liqu

    id Ph

    ase E

    xfolia

    tion

    Nano

    sheet

    s (nm

    to a

    few m

    )

    Chem

    ical R

    educ

    tion o

    f

    Grap

    hite O

    xide

    Nano

    flakes/

    Powd

    er (nm

    to a

    few m

    )

    Graphe

    ne Synthesis Methods

    Low Yield

    High Cost

    High Quality

    High Process

    Temperature (1500

    0C)

    Very Expensive Substrate

    High S

    calab

    ility

    Low

    Cost

    Low

    Purity

    High D

    efect

    Dens

    ity

    Moderate Scalability High Cost High Quality High Process Temparature (>1000 oC)

    Moderate Scalibility High Yield High Quality

    Potentially Low Cost

    High S

    calab

    ility

    Low

    Yield

    Mode

    rate Q

    uality

    Low

    Cost

    Impu

    re

    Source

    GateDra

    in

    Graphene Nanoribbon

  • Editorial

    About the Cover: A shematic showing the conventional methods commonly used for the synthesis of graphene along with their key features, the current and future applications, Samba Sivudu Kurva and Yashwant Mahajan. Designed by: N. Prasad, CKMNT.

    SUBSCRIPTION DETAILSWITHIN INDIA (print copy+online access):Academic Institutions / Individuals: 2000 per year / 4 issues Industry / Others: 5000 per year / 4 issues

    OUTSIDE INDIA:

    Print copy+online access: 10,000 per year / 4 issues Online access only: 6,000 per year / 4 issues

    Subscription fee can be paid through Cheque / DD drawn in favour of ARCI-Nanotech Insights payble at Hyderabad. or ECS/RTGS or Credit/ Debit Cards.

    Add bank charges of 90/- for outstation cheques within India

    For further information, please visit: www.ckmnt.com

    Editor-in-chief: G. Sundararajan

    Editors: Y. R. Mahajan S.V. Joshi

    Publicity ad Marketing: H. Purushotham

    Editorial Assistance: Technical: Abhilasha Verma, Vivek Patel

    Visualization & Design: N. Prasad

    Editorial Office: Centre for Knowledge Management of Nanoscience & Technology (CKMNT) 12-5-32/8, Vijayapuri Colony, Tarnaka, Secunderabad-500017, India Telephone: 040 27000251, 27007032, Telefax: 040 27007031

    Disclaimer: All information contained in this newsletter has been obtained from reliable sources deemed to be accurate by CKMNT. While reasonable care has been taken in its preparation, CKMNT assumes no representation or warranty, expressed or implied, as to the accuracy, timeliness or completeness of such information. All information should be considered solely as statements of opinion and no responsibility is owned by CKMNT for any injury and/or damage caused to person(s) or property as a matter of product liability, negligence or otherwise, or from any use of methods, products, instructions or ideas contained in the material herein. The authors are solely responsible for the content of their manuscripts and the opinions expressed and do not necessarily represent opinions of the Editorial Board or publisher. Authors are also responsible for obtaining permission to reproduce previously copyrighted material.

    Copyright: Single copies of articles in Nanotech Insights may be made for personal or educational use. Copies in quantity or for commercial purposes, regardless of media used or how reproduced or transmitted, is forbidden without prior written permission. Printed and Published by S. V. Joshi, Project Director (CKMNT) on behalf of CKMNT and printed at M/s. Kala Jyothi Process Private Limited, 1-1-60/5, RTC Cross Roads, Musheerabad, Hyderabad-500020, Andhra Pradesh, India. Published at CKMNT, No.12-5-32/8, Vijayapuri Colony Tarnaka, Secunderabad-500017, Andhra Pradesh, India. www.ckmnt.com, Editors: G. Sundararajan, Y. R. Mahajan, S. V. Joshi

    It is with immense delight that we bring to you yet another intellectually stimulating issue of Nanotech Insights. It is heartening to share with you that we have been receiving an overwhelming response and positive feedback on the quality of the newsletter from our readers. It is also a matter of great satisfaction to let you know that accolades have been coming in our way and stand testimony to our efforts and aspirations. For example, as in the case of our previous content, the article on A Satellite Defense System based on Quantum Dot Technology, which was published in the Special Issue of ICONSAT-2012 (Nanotech Insights, January, 2012), has been adjudged as the fourth most popular article among the Top Ten Spotlights-2012 posted on the Nanowerk website. Such kind of recognition and the interest shown by our readers around the world motivate us to make this publication a unique informative resource for our nanotech community and to strive further to live up to everybodys expectations. We would like to take this opportunity to sincerely thank the subscribers of Nanotech Insights for their unstinted support to our endeavour. We also would like to express our deepest gratitude to the esteemed guest authors for their creative and scholarly contributions to Nanotech Insights.Consistent with the theme and style of Nanotech Insights, this issue also presents an array of articles of current interest. The first Guest Article pertains to the issue of global warming caused by CO2 emissions that is one of the biggest problems facing humanity today. It highlights the development of an efficient, selective and inexpensive carbon dioxide adsorbent based on graphene, which offers significant potential as a promising candidate to capture carbon dioxide in coal based power plants. The second Guest Article presents an innovative non-lithographic technique to modify nanostructured films and bulk surfaces for application in nanoparticle arrays, nanowires and nanodots. The last Guest Article features a novel Cathodic Arc Deposition (CAD) process for the production of novel multilayer nano-composite coatings with an excellent surface finish and high level of substrate adherence for dry, high speed machining applications.Graphene has been recognized as the most exciting nanomaterial of the 21st century due to the unique combination of outstanding electronic, mechanical, thermal, optical and other properties that have recently been demonstrated. However, the major hurdle that prevents its widespread use for commercial applications is the lack of reliable, large-scale techniques to produce high-quality graphene. In the Hot Technologies segment, this issue has been addressed by carrying out extensive global patent analysis with a view to assess the possible future directions for achieving early commercialization of graphene. Nanoscale-thick films for multifunctional coating applications can be produced using Atomic Layer Deposition (ALD) technique, which has been detailed in our Technology Focus segment. Such coatings can be used in corrosion-free implants, oxygen and moisture resistant consumer electronics and tarnish resistant silver ornaments.The Spotlight segment in the current issue focuses on applications of nanotechnology in medicine and healthcare. The first article includes an overview of the role of nanotechnology in providing new solutions in diagnosing and treating Diabetes mellitus that has now emerged as the third deadliest disease in the world. The second spotlight article discusses the nanofiber-based burn-wound dressings. These advanced dressings have many advantages like haemostatic capability, conformability, high filtration and liquid absorption efficiency, etc., which are not provided by conventional dressing types. With the establishment of the Nano Mission, Govt. of India has taken a major initiative in promoting nanoscience and nanotechnologry activities in the country. Because of this and other new initiatives there has been a rapid progress in nano S&T activities over the last few years. Based on the extensive analysis of scientific literature carried out in this field, the Indian Scenario section reveals that there has been a significant growth in nano-related publications in terms of quantity and quality, and R&D laboratories and academic institutions are making significant contributions to this field. You will also find the regular features like R&D Highlights, Patents Spotlight, Commercial & Business Focus and Forthcoming Events covering some of the recent developments in nano domain.We hope that you will find this issue interesting and useful in keeping abreast of current developments in this field. We will eagerly await your valuable comments and feedback. Hoping to meet you with another exciting issue of Nanotech Insights, until then, wish you happ