presentatio nano

PHYSICAL SCIENCE

AJU MOHANBADHIRIYA B.Ed COLLEGE

NANOTECHNOLOGY

“Nanotechnology is the art an science of manipulating matter at the nanoscale”.

1 nanometer (10-9m)-one millionth of a millimeter, one billionth of a meter.

It is the key technology of the 21 st

century.

Nano particles- materials that have size in nm at least in one dimensions.

NANOTECHNOLOGY

The first ever concept was presented in 1959 by the famous professor of physics Dr. Richard P.Feynman.

Invention of the scanning tunneling microscope in 1981 and the discovery of fullerene(C60) in 1985 lead to the emergence of nanotechnology.

  The term “Nano-technology" had

been coined by Norio Taniguchi in 1974

History

THERE’S PLENTY OF

ROOM AT THE BOTTOM

Nanoscale Approaches and Fabrication

Top-down Approaches Bottom-up Approaches

Create smaller objects using Larger objects

They arrange smaller components in to more

complex.

Application Of Nanotechnology

NANO – THE NEW MESSIAH

FOR CANCER

TREATMENT

Conventional treatment options•Surgery•Radiation therapy•Chemotherapy

DEMERITS Surgery and Radiation cannot be used to treat all types of cancer.Survival rate very poor after IInd stage.Numerous side effects – hairloss, fatigue, nuetrophenia etc.If we increase dose beyond a threshold value, it can be fatal.

Using Dendrimers (nanocapsules)TARGETED DRUG DELIVERY

Using Magnetic nanoparticlesTARGETED DRUG DELIVERY

With NT, we can create unique materials and products which

are:

Stronger Lighter Cheaper Durable Precise

Computers can become a billion times faster and a million times smaller

Automatic Pollution Cleanup

Manufacturing at almost no cost

End of Illnesses (i.e. cancer, heart disease)

Universal Immunity (i.e. aids, flu)

Body Sculpting (i.e. change your

appearance)

Industrial

MedicalMaterial

Advantages

FEAR Nuclear and atomic bombs can have

different dimensions

Cloning and miniaturization

Nano medicine- worrying factor!

About Small Things..

NANOTECHNOLOGY

THE FUTURE IS

COMING…

INFORMATION

TECHNOLOGY

Information technology (IT) is the application

of computers and telecommunications equipment to store,

retrieve, transmit and manipulate data, often in the context of a business or other

enterprise.

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Welcome to the Information Age The Evolution of the Information Age

Agricultural Age: The period up to the 1800s, when the majority of workers were farmers whose lives revolved around agriculture.

Industrial Age: The period from the 1800s to 1957, when work processes were simplified through mechanization and automation.

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Welcome to the Information Age The Evolution of the Information Age

(Continued)

Information Age: The period that began in 1957, in which the majority of workers are involved in the creation, distribution, and application of information.

Knowledge Workers: Workers involved in the creation, distribution, and application of information.

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Senn, Information Technology, 3rd Edition

© 2004 Pearson Prentice Hall

Welcome to the Information Age The Evolution of the Information Age (Continued)

1.1 Applications of Information Technology in Our Daily Life

IT in Education◦ Driving force in educational reform◦ Students have many opportunities to

learn the basic computer skills to facilitate their learning.

Multimedia learning centre (MMLC) in secondary school

Classroom with a projector

1.1 Applications of Information Technology in Our Daily Life

IT at Home◦ Smart home technology

Allows people to control household and other domestic appliances over the Internet

◦ Personal computer Has become a necessity for many households

1.1 Applications of Information Technology in Our Daily Life

IT at Home◦ Personal computer

Uses of personal computer

1.1 Applications of Information Technology in Our Daily Life

IT at Home◦ Home office

Refers to a small computerized office setup at home

Self-employed persons can work at home and communicate with others through the Internet.

Self-employedperson

Internet

Internet

Clients

Colleagues

1.1 Applications of Information Technology in Our Daily Life

IT in Public Places◦ Internet access service

It is provided in various public places. The public can obtain information from the

Internet more conveniently.

Internet access service in public area

1.1 Applications of Information Technology in Our Daily Life

IT in Business◦ E-commerce

We can book tickets online (http://www.cityline.com.hk)

We can also purchase groceries online (http://www.wellcome.com.hk)

1.1 Applications of Information Technology in Our Daily Life

IT in Government◦ Information technology has become an

important means of providing government services.

◦ Under the ‘2004 Digital 21 Strategy’, the Hong Kong SAR government has committed to developing e-government.

1.1 Applications of Information Technology in Our Daily Life

IT in Government◦ Electronic Service Delivery

A web site that provides a wide range of government information and services

The services include,

application forgovernment job vacancies

payment of government

bills

makingappointments for

The use of public services

purchasingbooks

http://www.esd.gov.hk

ESD web site

1.1 Applications of Information Technology in Our Daily Life

IT in Government◦ Electronic Service Delivery

1.1 Applications of Information Technology in Our Daily Life

IT in Government◦ Smart Identity Card

Contains personal data, templates of thumb prints and photograph of card holder

Information stored is encrypted with high security Uses

Automatic immigration clearance (e-channel) Value-added information (e.g. library card)

1.2 Information Technology and the Information Age

Lifelong Learning◦ People must be information literate so as

to handle vast amount of information encountered everyday.

Changing skillsand

knowledgefor effective

use of IT

Peoplesupplement

their knowledgethrough

continuing education

1.2 Information Technology and the Information Age

Telecommuting◦ People working outside office through use of

telecommunication

Information Technology and the Information Age

Telecommuting◦ Advantages of telecommuting

Save travelling

time

Provide flexibleworking hours

Reduce company expense

Allow employees work remotely

Information Technology and the Information Age

Telecommuting◦ Disadvantages of telecommuting

Employers concerned

about exposing of

company confidentials

More difficult for

employers to monitor

work progress