Wednesday, September 12, 2012

1209.2345 (Tjipto Juwono et al.)

Effects of Lateral Diffusion on the Dynamics of Desorption    [PDF]

Tjipto Juwono, Ibrahim Abou Hamad, Per Arne Rikvold
The adsorbate dynamics during simultaneous action of desorption and lateral adsorbate diffusion is studied in a simple lattice-gas model by kinetic Monte Carlo simulations. It is found that the action of the coverage-conserving diffusion process during the course of the desorption has two distinct, competing effects: a general acceleration of the desorption process, and a coarsening of the adsorbate configuration through Ostwald ripening. The balance between these two effects is governed by the structure of the adsorbate layer at the beginning of the desorption process.
View original: http://arxiv.org/abs/1209.2345

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