Dynamic Fracture in Single Crystal Silicon

Details Dynamic Fracture in Single Crystal Silicon Dynamic Fracture in Single Crystal Silicon

1998-10-20

arxiv.org/abs/cond-mat/9810262v3

Physics

Condensed Matter

Materials Science

4 pages, 4 figures, 19 references

Scientific paper

10.1103/PhysRevLett.82.3823

We have measured the velocity of a running crack in brittle single crystal silicon as a function of energy flow to the crack tip. The experiments are designed to permit direct comparison with molecular dynamics simulations; therefore the experiments provide an indirect but sensitive test of interatomic potentials. Performing molecular dynamics simulations of brittle crack motion at the atomic scale we find that experiments and simulations disagree showing that interatomic potentials are not yet well understood.

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