Nanotechnology Essay

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A presentation on Nanotechnology Introduction "Nano" comes from the Greek "dwarf". It is used in the metric system to refer to "billionth" - a nanometre (nm) is a billionth of a metre, Put another way, this is about 1/50,000th the width of a human hair. Normal office paper is about 100,000nm thick. Nanotechnologists will typically work in the range 1-100nm. Some facts to visualize Nano * A nm is about the width of six bonded carbon atoms * your fingernails grow approximately one nanometer per second. * Another way to visualize a nanometer: 1 inch = 25,400,000 nanometers * A red blood cell is ~7,000 nm in diameter, and ~2000 nm in height * A virus is ~100 nm Nanotechnology * Nanotechnology is the ability to make things using techniques and tools that are being developed today to place every atom and molecule in a desired place. * Nanotechnology is often referred to as a general-purpose technology. That’s because in its mature form it will have significant impact on almost all industries and all areas of society. * It offers better built, longer lasting, cleaner, safer, and smarter products for the home, for communications, for medicine, for transportation, for agriculture, and for industry in general. Nanotechnology is the engineering of functional systems at the molecular scale, practically. Four generations of nanotechnology Progress of technology * In active nanostructures are introduced for multitasking for example: Actuators, drug delivery devices, and sensors. * Around 2010 nanosystems with thousands of interacting components will come up. * A few years after that, the first integrated nanosystems, functioning much like a mammalian cell (human cell) with hierarchical systems within systems, are expected to be developed. Injecting Nanobots

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