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NanoTechnology

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Nanotechnology is a broad field of science and technology whose theme is ... The honey comb shaped patterns are atoms packed together. Richard Feynman ... – PowerPoint PPT presentation

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Title: NanoTechnology


1
NanoTechnology
  • David J. Swenson
  • Spidercus

2
Some Nano Applications

3
What were covering
  • What is it?
  • History of Nanotechnology
  • Basic Concepts
  • Tools and Techniques
  • Implications

4
Why we are covering it
  • Has an impact on you life
  • Future the most important thing we have
  • Test

5
What is Nanotechnology?
  • Nanotechnology is a broad field of science and
    technology whose theme is controlling matter on
    the atomic and molecular scale

Picture of a solid gold using scanning tunnel
microscopy ? ? ? ? The honey comb shaped patterns
are atoms packed together
6
Richard Feynman
  • First to talk about Nanotechnology
  • Theres plenty of room at the bottom
  • December 29 1959

7
Norio Taniguchi
  • Coined the Term Nanotechnology in a 1974 paper
  • "On the Basic Concept of Nanotechnology"
  • ..Consists of the processing of, separation,
    consolidation, and deformation of materials by
    one atom or by one molecule."

8
Dr. K. Eric Drexler
  • Engines of Creation The Coming Era of
    Nanotechnology (1986)
  • Nanosystems Molecular Machinery, Manufacturing,
    and Computation (1992)

9
Basic Concepts
  • One nanometer one billionth of a meter
  • Comparisons
  • Marble to the Earth
  • Double Helix has a 2nm diameter
  • C-C bond .12-.15 nm apart
  • Length a mans beard grow in the time it takes to
    bring the razor to his face
  • Anything under 100nm is Nanotechnology

10
Basic Concepts
  • Lots of things change when shrunk down
  • Copper becomes transparent
  • Platinum and Gold become a catalyst
  • Aluminum becomes combustible
  • Gold becomes liquid at room temperature
  • Silicon can become a conductor

11
Current Nanotechnology
  • Bottom Up approach
  • Top down approach

12
Bottom up approach
  • Seek to make complex items out of small parts
  • Double Helix

13
Top down approach
  • Takes larger items to make small things
  • Microprocessor chips that can be seen by the
    naked eye create feature under 100nm

14
Tools and Techniques
  • Ultra microscope

Atomic force microscope
15
Implications
  • Smaller a particle the higher the surface area to
    volume ratio is causing loss of stability
  • Potential for some Nano-materials to be toxic
  • Nano-particles can get into just about anywhere

16
UW-Platteville
  • Nanotechnology announcement on the homepage last
    month

17
Now its time for some questions!
  • Who first said Nanotechnology?
  • What are some comparisons for a nm?
  • What were the two microscopes?
  • What were the two approaches?
  • Name some things that happen at a Nano scale.
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