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Completely new materials arise when semiconductor nanoparticles are periodically ordered in superlattices. First pioneering preparations of such superlattices were achieved by self-organization of ligand-stabilized CdSe and CdS nanoparticles. The block polymerization to give micelles in the presence of gold salts and their reduction by the electron beam of a transmission electron microscope (TEM) led to ordered gold clusters. The picture on the right shows a TEM image of a material of this type.
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Horst Weller (1996) studied this question.
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