PRESENTATION ON NANO SCIENCE & TECHNOLOGY

NANONano means the things which are in extremely small measure.The size of the particles which are lesser than 100 nanometers are rightly called as Nanoparticles.

It origins is from the Greek word nanos means dwarf

ORIGIN OF THE WORD NANO

NANO SCIENCE

Formulated and systematic knowledge of nano is known as nano science

Nanotechnology

• It is the study and designing of machines on the molecular and atomic level. • The mathematical measure of nanometer is 10-9 m.• Symbol of nano is ”n”. (1n=1billonth of 1m)

Relating Nanoscience, Nanoengineering and Nanotechnology

NANOENGINEERING

Produces the

fabrication method

from Nanoscience

by using

Nanotechnology

NANOTECHNOLOGY Provides the objectives to Nanoengineering by Nanoscience

NANOSCIENCE Provides the Basic Knowledge for both Nanotechnology and Engineering

Main discoveries of Nanoscience

C60 molecule which is also called as Bucky ball.Some Uses :In diagnostics and Cancer cell treatments

Carbon nanotubules100times Stronger than the steel but 1/6 of heavy, used in polymers as good conductors of heat & Electricity.

NanowiresExtremely small threads about 50nm wide. Some Uses : Biosensors, Elec. equipments, Memory chips etc,

Some Known factsGerman scientists have created a Nano particle containing polymer that both repels and kills bacteria.Japanese scientists have used nano needles 100 nm wide to deliver materials to very specific points in the cell. ‘Nano-flowers’ produced by growth of silicon carbide nanowires on gallium catalyst particles.

NANOTECHNOLOGY TODAY To increase the

recording densities of hard disk drives, patterned media has become one of the most promising strategies for achieving recording densities beyond 1 Tbit/in2. The researchers are trying to design HD with morethan 3.3 Tbit/in2.

Researchers have unveiled a semiconductor nano crystal coating material capable of controlling heat from the sun while remaining transparent. This heat passes through the film without affecting its visible transmittance, which could add a critical energy-saving dimension to “smart window” coatings.

NANO CRYSTAL COATING

STILL DEVELOPING NANOToday many companies are developing nanotechnology with any experts. Some of the projects and companies are :

Works on Self assembled nano Structures

Works on development of Nano-Photonics

Integrated circuits with nano-sized features

Developing quantum dot based displays

Magneto resistive Random Access Memory (MRAM)

Admirable Application of Nano

Cosmeti

cs

Nano-titanium dioxide and zinc oxide can absorb and reflect UV light, transparent to visible light and also used in sunscreens

Military applicatio

n

The military suites are coated by nano polymers for physical protection. The nano-battle suit is developed at Massachusetts Ins. Tech.

Disease Diagnosi

s

Detecting cancer at the single cell level,Hundreds of diseases are screened in single scan . Theraphy will shrink to cell level.

Intel core i7 in the processor which is the latest release Intel . Core i7 chip consists of more than about 700 millions of transistors in it. Its construction is based on 45nm fabrication process

Intel core i7

Due to the development in

nano coating technology ultra thin-easy clean nano-coatings are produced. Its is based on

the nano coating of silicon-dioxide

Nanotechnology on Lotus Effect(Water repellent)

Today Nanoscience revolutionized our world. By using Nanoscience and technology Water purifiers, Solar saving systems, Water repellent systems, New therapy methods, Internal combustion methods in transports , Memory chips, Nano cables in communication technology , construction of Nano robots.

Revolution of nano

Only one Drawbacks in NanoNanotechnologies could increase the divide between rich and poor. The application of Nanoscience is growing fast but the availability of that products are little higher so, it may form distance between the Rich and Poor

There are various Studies emerged today to develop Nanotechnology with adequate methods

Nano engineeringNano science Nano TechnologyAppied nanotechnology

PRESENTATION BY, S.L. Rambabu, I-B.SC, PHYSICS, DR. ZAKIR HUSAIN COLLEGE, ILAYANGUDI