Dewetting of solid films with substrate mediated evaporation

Details Dewetting of solid films with substrate mediated evaporation Dewetting of solid films with substrate mediated evaporation

2011-10-28

arxiv.org/abs/1110.6349v1

Physics

Condensed Matter

Materials Science

6 pages, 6 figures

Scientific paper

The dewetting dynamics of an ultrathin film is studied in the presence of evaporation - or reaction - of adatoms on the substrate. KMC simulations are in good agreement with an analytical model with diffusion, rim facetting, and substrate sublimation. As sublimation is increased, we find a transition from the usual dewetting regime where the front slows down with time, to a sublimation-controlled regime where the front velocity is approximately constant. The rim width exhibits an unexpected non-monotonous behavior, with a maximum in time.

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