Phase Separation Transition in Liquids and Polymers Induced by Electric Field Gradients

Citation:

Marcus, G. & Tsori, Y. Phase Separation Transition in Liquids and Polymers Induced by Electric Field Gradients. Journal of the Physical Society of Japan 78, (2009).
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Date Published:

2009

Abstract:

Spatially uniform electric fields have been used to induce instabilities in liquids and polymers, and to orient and deform ordered phases of block-copolymers. Here we discuss the demixing phase transition occurring in liquid mixtures when they are subject to spatially nonuniform fields. Above the critical value of potential, a phase-separation transition occurs, and two coexisting phases appear separated by a sharp interface. Analytical and numerical composition profiles are given, and the interface location as a function of charge or voltage is found. The possible influence of demixing on the stability of suspensions and on inter-colloid interaction is discussed. ©2009 The Physical Society of Japan

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