Nanotechnologie anglais


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  • This presentation describes the projects and current applications of this new technologie, with its multi-disciplinary nature and explains the enormous impact that nanotechnology will progressively make on materials, product and process research.

  • - Larger than Nanoscale is the microscale, and smaller than is the atomic scale

    The size of a typical nanoparticule is to a orange as a orange is to the earth
    A nanomolecule can cross all the tissus until the DNA

  • historically
    - He gave idea that ‘‘There’s plenty of room at the bottom’’, and he imagined the entire Encyclopedia Britannica written on the head of a pin.
    in 1985 we discovered ‘‘Buckyball’’, a round molecule consiting of 60 carbon atomes. And in 1991 you decovered the carbon nanotube
    It’s a really big discovery, because in 1991 carbon nanotubes were created and un nanotube is 100 times stronger than steel and 6 times lighter.

    These are six times lighter, yet 100 times stronger than steel.
  • - 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.

    just some examples :
  • Nanotechnology-today and tomorrow !!
  • Life science
  • It’s possible because the treatment is more specifice, Scientists may now be able to destroy tumors without killing healthy cell at the same time.
    Through nanotechnology we can combine a toxic chemotherapeutic drug with a vehicle for drug delivery and this combination will be administered to a patient. The chemo drug will enter the cancer cells alone and kill them without affecting the normal cells in the body. This combination is possible through nanotechnology

    Les scientifiques peuvent maintenant être en mesure de détruire les tumeurs sans killiing cellule saine en même temps

    Quantumdot : propriété spectrale..

    Nano gels

    Nanorobotics is the technology of creating machines or robots or close to the microscopic scale of a nanomètres
    Nanotechnologie est la technologie de créer des machines ou des robots ou proche de l'échelle microscopique d'un nanomètres

  • Space benefice of nanotechnology
  • For example: A Nano satellites will be 90% ligther with much greater strength

    Greater safety margin due to the use of diamondiod fibers that nt can produce
    Benefits to the Astronauts

    Space suits : combinaison spaciale
    Cheaper space flight = Vol d'espace meilleur marché
    Avec beaucoup plus de force marge de sécurité accrue grâce à l'utilisation de fibres diamondiod que nt peut produire
    Les choses se réduit par une échelle de nano .. en utilisant des particules nano on peut s'attendre à des ordinateurs de la taille d'un simple cube peu de sucre .. sans transiger sur aucune de ses fonctions habituelles.

  • Potentiel risks of nanotechnologie can broadly grouped into three areas :

    Health issues – the effect of nanomaterials on human biology. If any damage is done at the molecular level then it is not possible to revert it
    Environmental issues – the effects of nanomaterials on the environnement
    Societal issues – the effects that the availability of nanotechnological devices will have on politics and humain interaction
    questions de société - les effets que la disponibilité des dispositifs nanotechnologiques aura sur la politique et l'interaction humain

  • Toutefois, si les chercheurs dans ce domaine mettent en place un ensemble des lignes directrices éthiques et les suivent, alors nous devrions être en mesure de développer les nanotechnologies en toute sécurité tout en continuant de profiter de ses avantages promis.

    La nanotechnologie est prévu pour être développé d'ici 2020, mais beaucoup dépend de notre engagement à ses travaux de recherche
  • Nanotechnologie anglais

    3. 3. What is nanotechnology ?
    4. 4. Nanotechnology is … A science whose theme is the control of matter on an atomic and molecular scale
    5. 5. 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 filament 10 nm
    6. 6. 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 molecular shape know as the ‘‘ carbon nanotube ’’ A “Carbon Nanotube”
    7. 7. 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
    8. 8. IN
    9. 9.  Cancer treatment :  Nanorobotics : • Cancer cells can be killed without the painfull side effect of chemotherapy. •Diagnostic, Treatment and repair
    10. 10. BENEFICE
    11. 11.  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
    12. 12. Implication and Risks of Nanotechnology…  Potentiel risks of nanotechnologie can broadly grouped into three areas : • Health issues : • Environmental issues : • Societal issues :
    13. 13. 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
    14. 14. • • • science/2008/05/at_the_new_york_times_and_glob.php • • • Alberto Quiñonez, Ph.D.(Slides) • Karen Wosczyna-Birch (Slides) Bibliography