Colloidal Nanocrystal Shape and Size Control: The Case of Cobalt

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Science  16 Mar 2001:
Vol. 291, Issue 5511, pp. 2115-2117
DOI: 10.1126/science.1058495

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We show that a relatively simple approach for controlling the colloidal synthesis of anisotropic cadmium selenide semiconductor nanorods can be extended to the size-controlled preparation of magnetic cobalt nanorods as well as spherically shaped nanocrystals. This approach helps define a minimum feature set needed to separately control the sizes and shapes of nanocrystals. The resulting cobalt nanocrystals produce interesting two- and three-dimensional superstructures, including ribbons of nanorods.

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