| Résumé : |
Nanotechnology is the design, characterisation, production and application of structures, devices and systems by controlling shape and size at the nanometre scale which covers the size range from 1 nanometre to 100 nanometre (nm) where 1 nanometre is 1 billionth of a metre.
It is therefore the technology of the very small. To put this size into context, the diameter of a red blood cell is c.7000 nm, the average thickness of a human hair is of the order of 80,000 to 100,000 nm and human nails grow at a rate of 1 to 10 nm per second. The use of nanotechnology stretches across many areas of science from electronics to biology and has applications in many product sectors. Nanomaterials are those that have at least one dimension of size in the range 1 nm to 100 nm and they can be considered under the following three headings: Natural, anthropogenic, engineered. |
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Ajouter le résultat dans votre panier Affiner la rechercheNanotechnology in cosmetics analysed in PERSONAL CARE EUROPE, Vol. 3, N° 4 (11/2010)
