Nanotechnologie anglais
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Transcript of Nanotechnologie anglais
MALLANGIN David
M1 BCMG
NANO TECHNOLOGY
CONTENTS : INTRODUTION
NANOSCALE
APPLICATIONS
IMPLICATION
CONCLUSION
What is
nanotechnology ?
Nanotechnology is …
A science whose theme is
the control of matter on an
atomic and molecular scale
How small is the Nano Scale ?
One nanometer is one billionth, or 10-9 of meter.
One humain hair is about 100,000 nanometers.
DNA filament10 nm
HISTORY…
1959 : Richard Feynman won a Nobel prize for « fundamental work in quantum electrode » ‘‘There’s plenty of room at the bottom’’
’’ il y a plein d'espace en bas ’’
1985, researchers reported the discovery of the ‘‘buckyball’’ A “Buckyball.”
0.7 nm
1991 discovery of related molecularshape know as the ‘‘ carbonnanotube ’’ A “Carbon Nanotube”
Impact on Everyday life… today, the Nanoparticules, the most frequently used (65%) is silver, and in a least measures the carbon (17%). Come then titanium, the silica, zinc and gold.
Silica ( salt, sugar, cream)Titanium Titanium, Silver, silica and carbone
IN
Cancer treatment :
Nanorobotics :
• Cancer cells can be killed without the painfull sideeffect of chemotherapy.
•Diagnostic, Treatment and repair
BENEFICE
Improvement in shuttles and spaceport
• using nano particles we can expect computers of size of just a little sugar cube.. without compromising on any of its usual functions.
Space Benefice of Nanotechnologie…
Cheaper space flights
Nano foods …
• Preservation of food without refrigeration
• Protection of food from bacteria and diseases
• Lighter foods
Implication and Risks of Nanotechnology…
Potentiel risks of nanotechnologie can broadlygrouped into three areas :
• Health issues :
• Environmental issues :
• Societal issues :
However, if the researchers in this field put together an ethical set of guidelines and follow them, then we should be able to develop nanotechnology safely while still reaping its promised benefits.
• Nanotechnology is predicted to be developed by 2020 but much depends on our commitment to its research.
Conclusion
• http://www.newscientist.com
• http://wanderlustmind.com/2009/01/18/interactive-nanotech-food
• http://scienceblogs.com/framing-science/2008/05/at_the_new_york_times_and_glob.php
• http://1nanotechnology.blogspot.com/2007/08/conclusion.html
• http://en.wikipedia.org/wiki/Nanotechnology
• Alberto Quiñonez, Ph.D.(Slides)
• Karen Wosczyna-Birch (Slides)
Bibliography