A bicontinuous structure in some systems with cubic mesophases

Details A bicontinuous structure in some systems with cubic mesophases A bicontinuous structure in some systems with cubic mesophases

2003-12-05

arxiv.org/abs/cond-mat/0312157v1

Physics

Condensed Matter

Statistical Mechanics

23 pages, 3 figures

Scientific paper

10.2478/BF02476431

A cubic structure of polymer colloid complexes is studied. The technique of the research includes i) an analysis of well-known literature SAXS data; on this base, at some assumptions, ii) constructing a simple model to estimate geometric structure parameters and to receive a simulated scattering curve, iii) calculations of energetic parameters by help of the analytical fluctuation theory of the phase transitions; iv) comparing the model with the real structure obtained from the SAXS data by the electron density distribution reconstruction method. In the presence of an effective field the 2-nd order phase transition transforms to the 1-st order one in the vicinity of the Lifshitz point. As a result, a bicontinuous structure in cubic mesophases is formed.

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