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Nanotechnology Thomas Abraham
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“There’s plenty of room at the bottom” The physicist Richard Feynmann is credited with inspiring the field of nanotechology in a talk delivered in 1959. Why can we not build machines at the atomic level?
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Eric Drexler’s vision of molecular manufacturing
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A nanometre: one billionth of a metre http://www.newscientist.com/movie/nanote chnology-interactive http://www.newscientist.com/movie/nanote chnology-interactive
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The scanning tunnel microscope Developed by Gerd Binnig and Heinrich Rohrer of IBM ( won Nobel in 1986) Has an extremely fine tip, one atom in size, which passes an electric current over the surface of the material to be scanned Can be used to move individual atoms around
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http://spectrum.ieee.org/semiconductors/na notechnology/chemists-create-electric- nanocar http://spectrum.ieee.org/semiconductors/na notechnology/chemists-create-electric- nanocar
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Using DNA to make nanomachines Replicating nature: Using DNA’s unique properties for non biological engineering The principles on which DNA binds together are well understood, and can be used to make complex structure The pioneer: Nadrian Seeman of NYU
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DNA computers? Self assembling machines? http://www.kavliprize.no/artikkel/vis.html?t id=27564
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Could become a “transformative technology” like the steam engine in the industrial age, electricity and the internet Govts spend US$ 10 billion a year on nanotechnology China spends about US$1.3 billion US’s $2.18 billion, but in PPP China’s spending probably greater than the US China ranks third in the world for nano technology patents
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Nanotechnology and development http://www.scidev.net/en/news/nano- treated-bednets-last-five-times-longer.html http://www.scidev.net/en/news/nano- treated-bednets-last-five-times-longer.html http://www.scidev.net/en/news/nano-tea- bag-purifies-water.html http://www.scidev.net/en/news/nano-tea- bag-purifies-water.html
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Sources http://www.nature.com/nnano/index.html http://nanomagazine.co.uk/
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