PROVIDENCE, R.I. [Brown University] -- In 1972, physicists J. Michael Kosterlitz and David Thouless published a groundbreaking theory of how phase changes could occur in two-dimensional materials.
Silicon carbide after irradiation, in which loose carbon atoms (green) move toward the boundary (dashed line) between grains of the crystalline ceramic. Courtesy: Hongliang Zhang Grain boundaries in ...
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