Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2006-05-29
Physics
Condensed Matter
Soft Condensed Matter
10 pages, 4 figures
Scientific paper
10.1103/PhysRevE.74.041704
We find in a model system of thermotropic liquid crystals that the translational diffusion coefficient parallel to the director $D_{\parallel}$ first increases and then decreases as temperature drops through the nematic phase, and this reversal occurs where the smectic order parameter of the underlying inherent structures becomes significant for the first time. We argue, based on an energy landscape analysis, that the coupling between orientational and translational order can play a role in inducing the non-monotonic temperature behavior of $D_{\parallel}$. Such a view is likely to form the foundation of a theoretical framework to explain the anisotropic translation diffusion.
Bagchi Biman
Chakrabarti Dwaipayan
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