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Coexistence diameter in two-dimensional colloid-polymer mixtures | | R.L.C.Vink
; H.H. Wensink
; | | Date: |
22 Jun 2006 | | Subject: | Statistical Mechanics | | Abstract: | We demonstrate that the law of the rectilinear coexistence diameter in two-dimensional (2D) mixtures of non-spherical colloids and non-adsorbing polymers is violated. Upon approach of the critical point, the diameter shows logarithmic singular behavior governed by a term t ln(t), with t the relative distance from the critical point. No sign of a term t^2b could be detected, with b the critical exponent of the order parameter, indicating a very weak or absent Yang-Yang anomaly. Our analysis thus reveals that non-spherical particle shape alone is not sufficient for the formation of a pronounced Yang-Yang anomaly in the critical behavior of fluids. | | Source: | arXiv, cond-mat/0606579 | | Services: | Forum | Review | PDF | Favorites | |
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