Glass breaks like metals, but at the nanometer scale

Details Glass breaks like metals, but at the nanometer scale Glass breaks like metals, but at the nanometer scale

2002-07-18

arxiv.org/abs/cond-mat/0207449v2

Phys. Rev. Lett. 90 p.075504 (2003)

Physics

Condensed Matter

Statistical Mechanics

4 pages, 4 figures, to appear in Phys. Rev. Lett, few minor corrections, Fig. 1b changed

Scientific paper

10.1103/PhysRevLett.90.075504

We report in situ Atomic Force Microscopy experiments which reveal the presence of nanoscale damage cavities ahead of a stress-corrosion crack tip in glass. Their presence might explain the departure from linear elasticity observed in the vicinity of a crack tip in glass. Such a ductile fracture mechanism, widely observed in the case of metallic materials at the micrometer scale, might be also at the origin of the striking similarity of the morphologies of fracture surfaces of glass and metallic alloys at different length scales.

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