Volume 51, Number 3, August I 2000
|Page(s)||327 - 333|
|Section||Condensed matter: structure, mechanical and thermal properties|
|Published online||01 September 2002|
Breaking of scale invariance symmetry in adsorption processes
The Abdus Salam International Centre for Theoretical
Physics (ICTP) Condensed Matter Section -
P.O. Box 586, 34100 Trieste, Italy
2 Departament de Física Fonamental, Facultat de Física, Universitat de Barcelona Diagonal 647, 08028 Barcelona, Spain
Accepted: 31 May 2000
Standard models of sequential adsorption are implicitly formulated in a scale invariant form, by assuming adsorption on an infinite surface, with no characteristic length scales. In real situations, however, involving complex surfaces, intrinsic length scales may be relevant. We present an analytic model of continuous random sequential adsorption, in which the scale invariance symmetry is explicitly broken. The characteristic length is imposed by a set of scattered obstacles, previously adsorbed onto the surface. We show, by means of analytic solutions and numerical simulations, the profound effects of the symmetry breaking on both the jamming limit and the correlation function of the adsorbed layer.
PACS: 68.45.Da – Adsorption and desorption kinetics; evaporation and condensation / 82.70.Dd – Colloids / 82.20.Mj – Nonequilibrium kinetics
© EDP Sciences, 2000
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