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Low Speed Crack Propagation via Kink Formation and Advance on the Silicon (110) Cleavage Plane

By James R. Kermode, Anna Gleizer, Guy Kovel, Lars Pastewka, Gábor Csányi, Dov Sherman and Alessandro De Vita

Abstract

We present density functional theory based atomistic calculations predicting that slow fracturing of silicon is possible at any chosen crack propagation speed under suitable temperature and load conditions. We also present experiments demonstrating fracture propagation on the Si(110) cleavage plane in the ∼100m/s speed range, consistent with our predictions. These results suggest that many other brittle crystals could be broken arbitrarily slowly in controlled experiments

Topics: Physics and Astronomy (all)
Year: 2015
DOI identifier: 10.1103/PhysRevLett.115.135501
OAI identifier: oai:arts.units.it:11368/2868286

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