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Phase separation in thin films: Effect of temperature gradients

By Prabhat K. Jaiswal, Sanjay Puri and Kurt Binder


We study the phase-separation kinetics of a binary (AB) mixture confined in a thin film of thickness D with a temperature gradient. Starting from a Kawasaki-exchange kinetic Ising model, we use a master-equation approach to systematically derive an extension of the Cahn-Hilliard model for this system. We study the effect of temperature gradients perpendicular to the film with “neutral” (no preference for either A or B) surfaces. We highlight the rich phenomenology and pattern dynamics which arises from the interplay of phase separation and the temperature gradient

Publisher: EDP Sciences, IOP Publishing and Società Italiana di Fisica
Year: 2013
DOI identifier: 10.1209/0295-5075/103/66003
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