Electrons confined inside nano-pyramids

Quantum dots are nanostructures of semiconducting materials that behave a lot like single atoms and are very easy to produce. Given their special properties, researchers see huge potential for quantum dots in technological applications. Before this can happen, however, we need a better understanding of how the electrons "trapped" inside them behave. Physicists have recently observed how electrons in individual quantum dots absorb energy and emit it again as light.

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