Solvation Effects in Near-Critical Binary Mixtures

Akira Onuki; Hikaru Kitamura

doi:10.1063/1.1769357

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arXiv · cond-mat/0405575

Solvation Effects in Near-Critical Binary Mixtures

Akira Onuki·Hikaru Kitamura

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Abstract

A Ginzburg-Landau theory is presented to investigate solvation effects in near-critical polar fluid binary mixtures. Concentration-dependence of the dielectric constant gives rise to a shell region around a charged particle within which solvation occurs preferentially. As the critical point is approached, the concentration has a long-range Ornstein-Zernike tail representing strong critical electrostriction. If salt is added, strong coupling arises among the critical fluctuations and the ions. The structure factors of the critical fluctuations and the charge density are calculated and the phase transition behavior is discussed.

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Akira Onuki, Hikaru Kitamura. 2004-05-25. Solvation Effects in Near-Critical Binary Mixtures. https://doi.org/10.1063/1.1769357

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