"Nanocarbons"
Résumé
Graphite and diamond have been used since prehistory, long before they were recognized as two allotropes of elemental carbon. Of all elements, carbon is the champion of allotropy. At the threshold of bulk matter, the nanometer scale, carbon affords many more allotropes than its two worldly macroscopic forms graphite and diamond. The recent avatars of good old carbon have so unexpected behaviors that they figure out as star materials worthy of heavy Research and Development investments. Since 2000 they have generated great expectations in all technological sectors. As a few of them enter in industrial production, they are exemplars of the economy of promises attached to new materials.
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