Nanotechnology

Welcome to the nano-world

Where the next big thing is too small to

see!

Imagine a world no longer encumbered by the energy problems we have today.

Imagine a world where treating cancer would be as easy as treating a common cold?

Imagine a world were we would have total control over the structure of matter…..arranging it in any form conceivable, a world without energy limitations, without hunger and where defects and malfunctions in our own body could be easily corrected.

Now is the moment my friends where our imagination turns

into reality!

Yes….this is the nano-age…where we design

OUR world!

So what is nanotechnology?

Nanotechnology (sometimes shortened to "nanotech") is the study of manipulating matter on an atomic and molecular scale. Generally, nanotechnology deals with developing materials, devices, or other structures possessing at least one dimension sized from 1 to 100 nanometers.

Technical definition

Nanotechnology is manufacturing with atoms. -William Powell

Nanotechnology will let us build computers that are incredibly powerful. We'll have more power in the volume of a sugar cube than exists in the entire world today. -Ralph Merkle

As we all know..every thing is made up of atoms..nanotechnology creates things by manipulating the structure of the atom!

Throughout history, variations in the arrangement of atoms have distinguished the cheap from the cherished….

The diseased from the healthy.

Arranged one way, atoms make up soil, air, and water arranged another, they make up ripe strawberries. Arranged one way, they make up homes and fresh air; arranged another, they make up ash and smoke.Eric Drexler — Engines of Creation, p. 3, 1983

Although nanotechnology is a relatively recent development in scientific research, the development of its central concepts happened over a longer period of time. The emergence of nanotechnology in the 1980s was caused by the convergence of experimental advances such as the invention of the scanning tunneling microscope in 1981 and the discovery of fullerenes in 1985

ORIGIN

These applications that I am about to state are just the small tip of a vast iceberg

Applications of nanotechnology

Today I am going to cover the following applications of nanotechnology

1. Nanotechnology in medicines2. Nanotechnology in Textiles3. Nanotechnology in Space

One application of nanotechnology in medicine currently being developed involves employing nanoparticles to deliver drugs, heat, light or other substances to specific types of cells (such as cancer cells). Particles are engineered so that they are attracted to diseased cells, which allows direct treatment of those cells. This technique reduces damage to healthy cells in the body and allows for earlier detection of disease.

NANOTECHNOLOGY IN MEDICINE

As we all know chemotherapy used for treating cancer has numerous disadvantages! But what if we could design something that could get under the skin and kill the tumor cells?Many researchers attach ethylene glycol molecules to nanoparticles that deliver therapeutic drugs to cancer tumors. The ethylene glycol molecules stop white blood cells from recognizing the nanoparticles as foreign materials, allowing them to circulate in the blood stream long enough to attach to cancer tumors. However researchers at the University of California, San Diego believe that they can increase the time nanoparticles can circulate in the blood stream.

If you hate getting shots, you'll be glad to hear that oral administration of drugs that currently are delivered by injection may be possible in many cases. The drug is encapsulated in a nanoparticles which helps it pass through the stomach to deliver the drug into the bloodstream. There are efforts underway to develop oral administration of several different drugs using a variety of nanoparticles.

Nanoparticles, when activated by x-rays, that generate electrons that cause the

destruction of cancer cells to which they have attached

themselves. This is intended to be used in place radiation

therapy with much less damage to healthy tissue.

Nanotechnology In Textiles

Waterproof clothes

Have you ever been to a party all excited and dolled up just to encounter an embarrassing accident with the waiter that soiled your entire evening?Well..you need not worry..because nanotechnology is at here at your rescue!Scientists have invented a water-proof cloth that does not allow even an atom of water to stay on the cloth!So that water that was supposed to ruin your evening glides smoothly off your dress…leaving you flawless!

How about wrinkle free clothes?

Do you dread those hours spent in ironing or those visits to the laundry man?Introducing the wrinkle free cloth!

To impart wrinkle resistance to fabric, resin is commonly used in conventional methods. However, thereare limitations to applying resin, including a decrease in the tensile strength of fiber, abrasionresistance, water absorbency and dye ability, as well as breathability.Besides wrinkle-free clothing wearers are at risk for a skin condition called contact dermatitis, which can cause itchy skin, rashes and blisters, and it poses serious health implications for people who work with the chemical in factories. To overcome the limitations ofusing resin, some researchers employed nano-titanium dioxide [31, 32] and nano-silica [33] to improvethe wrinkle resistance of cotton and silk respectively.

Disadvantages of wrinkle free cloth

Nanotechnology may hold the key to making space flight more practical. Advancements in nonmaterial make lightweight solar sails and a cable for the space elevator possible. By significantly reducing the amount of rocket fuel required, these advances could lower the cost of reaching orbit and traveling in space. In addition, new materials combined with nanosensors and nanorobots could improve the performance of spaceships, spacesuits, and the equipment used to explore planets and moons, making nanotechnology an important part of the ‘final frontier.’

Nanotechnology in space

Gone are the days of huge spaceships that cost a fortune!

Carbon nanotubes are the perfect choice for such an elevator’s cable, since nanotechnology is able to create carbon-based material that is light in weight yet strong enough to withstand the forces it would face in space.A space elevator would make all kinds of pioneering efforts possible by dramatically reducing the cost of sending things into orbit.This becomes painfully obvious when one considers that 95% of a space shuttle’s takeoff weight is entirely devoted to fuel storage.

Use of technology in space

Other applications of nanotechnology are-

1. Pharmacy2. Electrical3. Food industry4. Agriculture5. Environment preservation6. Cosmetics7. Optics8. Sports9. Robotics And the list could go on…..!

That day is not far when the world will be measured in

nanometers!

THANK-YOU