News of the WeekSOLID STATE PHYSICS

Theory of Shock Waves Clears Up the Puzzling Graininess of Crystals

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Science  10 Mar 2006:
Vol. 311, Issue 5766, pp. 1361
DOI: 10.1126/science.311.5766.1361a

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Summary

Theorists have now shown how the boundaries delineating a crystalline material's grains and cells form out of stringy imperfections in the crystal called dislocations. (Read more.)