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- W3101781819 abstract "In the wake of previous studies on the rattling-and-jumping diffusion in smectic liquid crystal phases of colloidal rods, we analyze here for the first time the heterogeneous dynamics in columnar phases. More specifically, we perform computer simulations to investigate the relaxation dynamics of a binary mixture of perfectly aligned hard spherocylinders. We detect that the columnar arrangement of the system produces free-energy barriers that the particles should overcome to jump from one column to another, thus determining a hopping-type diffusion. This phenomenon accounts for the non-Gaussian intercolumn diffusion and shows a two-step structural relaxation that is remarkably analogous to that of out-of-equilibrium glass-forming systems and gels. Surprisingly enough, slight deviations from the behavior of simple liquids due to transient cages is also observed in the direction perpendicular to this plane, where the system is usually referred to as liquidlike." @default.
- W3101781819 created "2020-11-23" @default.
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- W3101781819 date "2010-10-21" @default.
- W3101781819 modified "2023-09-25" @default.
- W3101781819 title "Heterogeneous dynamics in columnar liquid crystals of parallel hard rods" @default.
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- W3101781819 doi "https://doi.org/10.1063/1.3505150" @default.
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