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Nanotechnology :

Nanotechnology Presented by : Yashika Sharma

What is nanotechnology:

What is nanotechnology A BASIC DEFINITION :-nanotechnology is a engineering of functional systems at the molecular scale. This cover both current work & concepts that are more advanced. In its original sense nanotechnology refer to the projected ability to construct items from the bottom up, using techniques & tools being developed today to make complete, high performance products

Who made nanotechnology.:

Who made nanotechnology. He is a great scientist . His name is K. Eric Drexler. He has invented nanotechnology which is very useful to us.

Meaning of nanotechnology:

Meaning of nanotechnology When K. Eric Drexler (right) popularized the word'nanotechnology'in the 1980's, he was talking about building machines on the scale of molecules, a few nanometers wide—motors, robot arms, and even whole computers, far smaller than a cell. Drexler spent the next ten years describing and analyzing these incredible devices, and responding to accusations of science fiction. Meanwhile, mundane technology was developing the ability to build simple structures on a molecular scale. As nanotechnology became an accepted concept, the meaning of the word shifted to encompass the simpler kinds of nanometer-scale technology. The U.S. National Nanotechnology Initiative was created to fund this kind of nanotech: their definition includes anything smaller than 100 nanometers with novel properties.

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I want to build a billion tiny factories, models of each other, which are manufacturing simultaneously. . . The principles of physics, as far as I can see, do not speak against the possibility of maneuvering things atom by atom. It is not an attempt to violate any laws; it is something, in principle, that can be done; but in practice, it has not been done because we are too big. — Richard Feynman, Nobel Prize winner in physics Based on Feynman's vision of miniature factories using nanomachines to build complex products, advanced nanotechnology (sometimes referred to as molecular manufacturing ) will make use of positionally-controlled mechanochemistry guided by molecular machine systems. Formulating a roadmap for development of this kind of nanotechnology is now an objective of a broadly based technology roadmap project led by Battelle (the manager of several U.S. National Laboratories) and the Foresight Nanotech Institute . Shortly after this envisioned molecular machinery is created, it will result in a manufacturing revolution , probably causing severe disruption. It also has serious economic, social, environmental, and military implications . 'nanotechnology' is not nanotechnology in the original Much of the work being done today that carries the name meaning of the word. Nanotechnology, in its traditional sense, means building things from the bottom up, with atomic precision. This theoretical capability was envisioned as early as 1959 by the renowned physicist Richard Feynman .

Top 10 ueses of nanotechnology:

Top 10 ueses of nanotechnology 1. CONTAMINATION SENSOR: Flash a light to reveal the presence of E. coli bacteria. 2. ANTIMICROBIAL PACKAGING: Edible food films made with cinnamon or oregano oil, or nano particles of zinc, calcium other materials that kill bacteria. 3. IMPROVED FOOD STORAGE: Nano-enhanced barrier keeps oxygen-sensitive foods fresher. 4. ENHANCED NUTRIENT DELIVERY Nano-encapsulating improves solubility of vitamins, antioxidants, healthy omega oils and other ‘nutraceuticals’. 5. GREEN PACKAGING: Nano-fibers made from lobster shells or organic corn are both antimicrobial and biodegradable.

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6. PESTICIDE REDUCTION: A cloth saturated with nano fibers slowly releases pesticides, eliminating need for additional spraying and reducing chemical leakage into the water supply. 7. TRACKING, TRACING; BRAND PROTECTION: Nanobarcodes can be created to tag individual products and trace outbreaks. 8. TEXTURE: Food spreadability and stability improve with nano-sized crystals and lipids for better low-fat foods. 9. FLAVOR: Trick the tongue with bitter blockers or sweet and salty enhancers. 10. BACTERIA IDENTIFICATION AND ELIMINATION: Nano carbohydrate particles bind with bacteria so they can be detected and eliminated.

Four generations of nanotechnology:

Four generations of nanotechnology

Thank you:

Thank you The end………….