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Adsorption kinetics in the presence of external fields
Pagonabarraga Mora, Ignacio; Bafaluy Bafaluy, Javier; Rubí Capaceti, José Miguel
Universitat de Barcelona
In this article we present a detailed analysis of the kinetics of a class of sequential adsorption models that take into account the effect of externally applied fields (as an electric field, or a shear rate) on the adsorption. The excluded volume interactions related to the finite size of the adsorbing particles are modified by the external fields. As a result, new adsorption mechanisms appear with respect to the ones used to describe the kinetics in a quiescent fluid. In particular, if the adsorbing particles are allowed to roll over preadsorbed ones, adsorption becomes non local even in the simplest geometry. An exact analytic theory cannot be developed, but we introduce a self-consistent theory that turns out to agree with the simulation results over all the range of the parameters.
2011-07-26
Química física
Superfícies (Física)
Interfícies (Ciències físiques)
Pel·lícules fines
Physical and theoretical chemistry
Surfaces (Physics)
Interfaces (Physical sciences)
Thin films
(c) American Physical Society, 1999
Article
The American Physical Society
         

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