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The simplest model of adsorption of molecules with different orientations in adlayer on the stepped surface
Authors:VF Fefelov  VA Gorbunov  MD Myshlyavtseva
Institution:a Omsk State Technical University, Omsk, Russia
b Institute of Hydrocarbons Processing SB RAS, Omsk, Russia
Abstract:In this article we have constructed and studied using the Monte Carlo and transfer-matrix techniques the simple lattice gas models of self-assembled monolayer, which consists of molecules with different orientations in the adlayer on the stepped surfaces. It was shown that in the case of adsorption of complex molecules the surface heterogeneity of stepped type leads to a great variety of ordered structures comparatively with homogeneous one. The constructed models fairly well reproduce the main features of real SAMs consisting of molecules with different orientations with respect to interface and the model ordered phases are also analogues to the structures of real SAMs.
Keywords:Self-assembled monolayer  Monte Carlo method  Adsorption  Dimer  Different orientations
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