Stress-promoted surface kinetics as a precursor of islanding

Boris I. Yakobson

doi:10.1117/12.175794

11 May 1994 Stress-promoted surface kinetics as a precursor of islanding

Boris I. Yakobson

Proceedings Volume 2140, Epitaxial Growth Processes; (1994) https://doi.org/10.1117/12.175794
Event: OE/LASE '94, 1994, Los Angeles, CA, United States

Abstract

Stress-modulated surface kinetics offers a possible path to the ultimate fracture of brittle solids. Similarly, it leads to a breakup of growing strained layer into the separate domains- islands. A proposed reduced description of a single growing concavity and an interpolation between small and large amplitude limits lead to a two-parameter model of the islanding precursor: it starts from a smooth boundary and generates a sharp cusp, which enables a further growth of incoherent islands. Within the `local description' approximation we outline a general dynamic behavior of stressed interface, with the possibility of relaxation loops; they may be responsible for the barrierless formation of dislocations and stress relief.

Citation Download Citation

Boris I. Yakobson "Stress-promoted surface kinetics as a precursor of islanding", Proc. SPIE 2140, Epitaxial Growth Processes, (11 May 1994); https://doi.org/10.1117/12.175794

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