Assemblies of quantum dots tend to be highly disordered, but when the facets of these tiny semiconducting structures are lined up like soldiers on parade, something strange happens: the dots become very good at conducting electricity. This is the finding of researchers at the RIKEN Center for Emergent Matter Science in Japan, who say that these ordered, quasi-two-dimensional “superlattices” of quantum dots could make it possible to develop faster and more efficient electronics.
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