Positron Annihilation Spectroscopy (PAS) is a highly sensitive, non-destructive method for probing atomic-scale imperfections in a broad spectrum of materials, from metals and ceramics to polymers and ...
Physicists in the US have gained new insights into one most of the basic phenomena in physics -- the melting of a solid. Arjun Yodh and colleagues at the University of Pennsylvania and Swarthmore ...
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