Phase separation transition in liquids and polymers induced by electric field gradients

G. Marcus; Y. Tsori

doi:10.1143/jpsj.78.041010

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arXiv · 0901.1990

Phase separation transition in liquids and polymers induced by electric field gradients

G. Marcus·Y. Tsori

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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.

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G. Marcus, Y. Tsori. 2009-01-14. Phase separation transition in liquids and polymers induced by electric field gradients. https://doi.org/10.1143/jpsj.78.041010

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