NANOTECHNOLOGY

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PowerPoint Presentation:

Kalpana G

NANOTECHNOLOGY:

It shortened to "nanotech", is the study of the controlling of matter on an atomic and molecular scale Nanotechnology is the engineering of functional systems at the molecular scale . Nanotechnology is an expected future manufacturing technology that will make most products lighter, stronger, cleaner, less expensive NANOTECHNOLOGY

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How Nanotechnology impacts our lives now ?

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Nanocomposites A plastic nanocomposite is being used for "step assists" in the GM Safari and Astro Vans. It is scratch-resistant, light-weight, and rust-proof, and generates improvements in strength and reductions in weight. It is made by sponge-like silica latch onto toxic metals in water.

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Nanocrystals Nanocrystals absorb then re-emit the light in a different color. The size of the nanocrystal determines the color. Nanocrystals of various metals have been shown to be 100 percent, 200 percent and even as much as 300 percent harder than the same materials in bulk form Six different quantum dot solutions are shown, excited with a long-wave UV lamp.

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Nanocrystals are an ideal light harvester in photovoltaic devices. They absorb sunlight more strongly than dye molecules or bulk semiconductor material, therefore high optical densities can be achieved while maintaining the requirement of thin films. ADVANTAGES OF NANOCRYSTALS

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Nanoparticles Sunscreens are utilizing nanoparticles that are extremely effective at absorbing light, especially in the ultra-violet Due to the particle size, they spread more easily, cover better, and save money since you use less. And they are transparent, unlike traditional screens which are white.

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Nanoclays and Nanocomposites Nanoclays help to hold the pressure and carbonation inside the bottle, increasing shelf life. It is estimated that beer in these containers will gain an extra 60 days (from 120 to 180) of shelf life, reducing spoilage, and decreasing overall costs to the end user. Nanocor is one company producing nanoclays and nanocomposites

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Nanocomposite Coatings Nanocomposite : It is a mix of butyl rubber, intermingled with nanoclay particles, giving the ball substantially longer shelf life

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Nanotubes for commercially used is in a tennis racket, made by Babolat. Nanotubes Carbon nanotubes are electrically conductive and due to their small diameter of several nanometers, they can be used as field emitters with extremely high efficiency for Field emission displays

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The characteristic properties of all nanoparticles has been used from the outset in the manufacture of automotive catalytic converters A variety of chemical reactions take place on the surface of the catalyst, and the larger the surface area, the more active the catalyst. Nanocatalysts

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Nanofilters Nanofiltration products, makes a filter that is capable of filtering the smallest of particles. The performance is due to it’s nano size alumina fiber, which attracts and retains sub-micron and nanosize particles.

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CONTD… This disposable filter retains 99.9999+% of viruses at water flow rates several hundred times greater than virus-rated ultra porous membranes It is useful for sterilization of biological, pharmaceutical and medical serums, protein separation, collector/concentrator for biological warfare detectors, and several other applications.

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Nano Medicine The unique properties of nanomaterials for various applications Like contrast agents for cell imaging and therapeutics for treating cancer Terms such as biomedical nanotechnology , nanobiotechnology , and nanomedicine are used to describe this hybrid field.

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Nanotechnology can help to reproduce or to repair damaged tissue. “Tissue engineering” makes use of artificially stimulated cell proliferation by using suitable nanomaterial-based scaffolds and growth factors. Tissue engineering might replace today’s conventional treatments like organ transplants or artificial implants Tissue engineering

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Chemical catalysis and filtration techniques are two prominent examples where nanotechnology already plays a role. Chemistry and environment Chemistry is indeed a basic nanoscience Chemistry forms a base for nanotechnology providing tailor-made molecules, polymers, etcetera, as well as clusters

Energy Application of:

Energy Application of The most advanced nanotechnology projects related to energy are: Storage, conversion, manufacturing improvements by reducing materials and process rates, energy saving by better thermal insulation and enhanced renewable energy sources. Nanotechnology

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Nanotechnology can contribute to the further reduction of combustion engine pollutants by nanoporous filters which can clean the exhaust mechanically, by catalytic converters based on nanoscale noble metal particles The use of more environmentally friendly Therefore many nanostructured materials like nanotubes, zeolites or alanates are under investigation. energy systems

Information and Communication:

Information and Communication Current high-technology production processes are based on traditional top down strategies where nanotechnology has already been introduced silently. In the modern communication technology traditional analog electrical devices are increasingly replaced by optical or optoelectronic devices due to their enormous bandwidth and capacity, respectively.

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