eNehtpQ;QhdKk; eNehnjhopDl;gKk; (Nanoscience and Nanotechnology) and nanotechnology.pdf · •...

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eNehnjhopDl;gKk;(Nanoscience and Nanotechnology)O\/ngqzuise<B.Sc(Hons), M.Sc(nanoscience,Reading)Research AssitantPhotochemistryInstitute of Fundamental StudiesSri Lanka.

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• “gQOp fqjxb njxgt<!dt<te”• “There is plenty of rooms at the bottom”

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• Caltech, American Physical Society-1959

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• OmigqObi uqR<Rieh<!hz<gjzg<gpgOhvisqvqbiv<!ofixqObi keqGs<sq we<huviz<!2:85. Prof Norio Taniguchi

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wvqg<!covg<^<zv<Dr. K. Eric Drexler

wvqg<!covg<^<zv<Dr. K. Eric Drexler

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• Engines of Creation: The Coming Era of Nanotechnology

• Nanosystems: Molecular Machinery, Manufacturing, and Computation, (ISBN 0‐471‐57518‐6). 

• Drexler's vision of nanotechnology is often called "Molecular Nanotechnology" (MNT) or "molecular manufacturing," and Drexler at one point proposed the term "zettatech" which never became popular.

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• In 2004 he stated "I wish I had never used the term 'grey goo'."

What happen when the Gray goo washed over the city

Birth of Scanning Probe Microscopy

Gerd Binnig Heinrich Rohrer

For their design of the scanning tunnelling microscope

First Paper in 1982 ; Won the Nobel Prize = 1986

Dr/!-vqs<sm<!^<lzqDr.Richard Smalley “Rick”

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The Lycurgus Cup  represents one of the outstanding achievements of the 

ancient glass industry

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• ujvuqzg<g{l<• The study of materials and their behavior at the

level of particles measured in nanoscale• Hkiv<k<kr<gtqe<!-bz<HgjtBl<!nux<xqe<!fmkmjkg<Ogizr<gjgBl<!fOfintuqjmbigqb 2.211!nm -z<!gx<xOzfOfiuquqR<Riel</

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• ujvuqzg<g{l<• Understanding and control of matter at dimensions between

approximately 1 and 100 nanometers, where unique phenomena enable novel applications.

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• A material that exhibits distinct properties when studied on the order of less than 100 nm.

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Size dependent properties

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• OlzqVf<K.gQp<n[GLjx)top down approach*• gQpqVf<K.Olz<!n[GLjx)bottom to top approach)

OlzqVf<K.gQp<n[GLjx)top down approach*

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fOfi ntuqjms<sqxh<hqbz<Hgt<)Properties at nanoscale)

• Chemical Properties (-vsibe -bz<Hgt<*

• Electrical Properties (lqe<!-bz<Hgt<*!• Electronic Properties (<-zk<kqveqbz<!-bz<Hgt<*!• Optical Properties (ytqbqbz<!-bz<Hgt<*!• Mechanical Properties (ohtkQg -bz<Hgt<*!

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Chemical Properties (-vsibe -bz<Hgt<*

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DNA and Protein, not Cell

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