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

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Presentation transcript:

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

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

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

1 metre 1 millimetre 1 micrometer 1 nanometre

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

No computer required Camera Light source

Advantages: Instant image Cheap to buy (only several thousands) Colour image Disadvantages: Low resolution (few micrometers) Low magnification

Uses electrons fired onto the surface Detects ‘back scattered’ electrons to create a computerised image

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

5 microns

500 nanometres

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

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

20 microns

Electron microscope that fires electrons through the sample…

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

“Works like a blind man reads Braille” Uses a needle and cantilever

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

This is SEM with focused ion beam device.

1mm These are our photos!

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.

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.

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

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