Research CommentariesQUANTUM DOTS

The Evidence of Small Things

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Science  10 Apr 1998:
Vol. 280, Issue 5361, pp. 225
DOI: 10.1126/science.280.5361.225

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Quantum dots are small semiconductors, so small in fact that quantum effects are dominant. The result is that the energy levels look like those of an atom. In his Research Commentary, Gammon discusses results reported in the same issue by Landin et al . in which the growth density of quantum dots was reduced to the point at which individual dots could be studied with a microscope. Improvements in understanding these dots could lead to applications as memory devices, optical elements, or logic elements in computing.