Volume 41, Number 4, february II 1998
|Page(s)||395 - 400|
|Section||Condensed matter: structure, thermal and mechanical properties|
|Published online||01 September 2002|
Dynamical scaling in close-to-equilibrium adsorption
Department of Physics, Texas A&M University,
College Station, TX 77843-4242, USA
2 Institut für Festkörperphysik, Universität Hannover, Appelstraße 2, D-30167, Hannover, Germany
3 Institut für Theoretische Physik, Universität Hannover, Appelstraße 2, D-30167, Hannover, Germany
Accepted: 6 January 1998
Scaling of the hysteresis loop in a close-to-equilibrium adsorption-desorption (CEAD) process is explored. We consider the response of the CEAD process to a chemical potential which varies harmonically with time, . corresponds to the coverage at equilibrium. The cycle time τ is assumed to be sufficiently large so that the system is in thermal equilibrium at all times. The area of the adsorption-desorption cycle loop scales as . We show that for growth-controlled hysteresis (GCH), i.e. in the limit of a small nucleation time , and for GCH, and confirm this prediction by numerical simulation of a simple model. Possible experimental checks of these predictions are discussed.
PACS: 68.45.Da – Adsorption and desorption kinetics; evaporation and condensation / 68.10.Jy – Kinetics (evaporation, adsorption, condensation, catalysis, etc.) / 68.35.Rh – Phase transitions and critical phenomena
© EDP Sciences, 1998
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