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Shinnosuke Kakimoto Hiroyuki Tashiro Ryo Hatayama Rina Takashima Hiroaki Sasaki

Shinnosuke Kakimoto Hiroyuki Tashiro Ryo Hatayama Rina Takashima Hiroaki Sasaki. Nicholas Bunce Calum Leslie Rosemary Pike Shaun Miller. introduction. What is Nanotechnology? Nanotechnology is the design, characterisation, production and application of structures,

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Shinnosuke Kakimoto Hiroyuki Tashiro Ryo Hatayama Rina Takashima Hiroaki Sasaki

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  1. Shinnosuke Kakimoto Hiroyuki Tashiro Ryo Hatayama Rina Takashima Hiroaki Sasaki Nicholas Bunce Calum Leslie Rosemary Pike Shaun Miller

  2. introduction What is Nanotechnology? Nanotechnology is the design, characterisation, production and application of structures, devices and systems by controlling shape and size at the nanoscale from wikipedia.com

  3. Misconceptions • Nanotechnology is NOT fancy • robots repairing cells in a body… • The “Grey Goo” • theory is NOT true…

  4. Measurements 1 metre 1 millimetre 1 micrometer 1 nanometre

  5. What we did • Observations and measurements: • Compare and use Microscopes • Used a Focused ion beam (FIB) • Took lots of images of structures and samples.

  6. Equipment of nano technology

  7. Optical Microscopes No computer required Camera Light source

  8. Optical Microscopes • Disadvantages: • Low resolution (few micrometers) • Low magnification • Advantages: • Instant image • Cheap to buy (only several thousands) • Colour image

  9. Scanning Electron Microscope Uses electrons fired onto the surface Detects ‘back scattered’ electrons to create a computerised image

  10. Scanning Electron Microscope • Disadvantages: • Destroys biological • samples • Beam damage • Lack of colour • Advantages: • High vacuum = high resolution (5nm) • Relatively quick image • Average price (early 100 thousands)

  11. 5 microns

  12. 500 nanometres

  13. Enviromental SEM Electron microscope – but for biological stuff… You can even put live bugs in it!

  14. Advantages: • Biological samples do not become damaged • Very low pressure not required • Disadvantages: • Lower resolution than normal SEM • More expensive than original SEM Enviromental SEM

  15. 20 microns

  16. Transmition Electron Microscope Electron microscope that fires electrons through the sample…

  17. Advantages: • Very high resolution (0.1nm) • No limit on sample type • Disadvantages: • Very expensive (millions) • Large amount of energy used • Very low pressures Transmition Electron Microscope

  18. Atomic Force Microscope “Works like a blind man reads Braille” Uses a needle and cantilever

  19. Atomic Force Microscope • Advantages: • Able to obtain 3D image • Very high resolution • Disadvantages: • Takes a very long time to produce an image – at least 10 minutes

  20. Focused Ion Beam This is SEM with focused ion beam device.

  21. These are our photos! 1mm 1mm

  22. This drawing was designed by ourselves and was “milled” by FIB. This photo was taken with using SEM. This is the character of a Japanese cartoon.

  23. This is very tiny portrait of Rosemary. It was also milled by FIB. Different shades are shown on the image by how deep the beam mills. This is shown by this 3D image.

  24. Uses and futures of Nanotechnology Carbon nanotubes -To replace carbon fibres -Used to build computer components Strong and very conductive. Cancer diagnosis Transparent Sunscreen

  25. Conclusion • Nanotechnology has many important uses, and much research is still being done into its potential. • Measurement and microscopy is the key!

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