短纵横比硬椭球体向列相的弹性性质。
Elastic properties of the nematic phase in hard ellipsoids of short aspect ratio.
作者信息
Heymans S, Schilling T
机构信息
Université du Luxembourg, Theory of Soft Condensed Matter, Physics and Materials Sciences Research Unit, L-1511 Luxembourg, Luxembourg.
Institute of Physics, University of Freiburg, Hermann-Herder-Strasse 3, D-79104 Freiburg, Germany.
出版信息
Phys Rev E. 2017 Aug;96(2-1):022708. doi: 10.1103/PhysRevE.96.022708. Epub 2017 Aug 14.
We present a Monte Carlo simulation study of suspensions of hard ellipsoids of revolution. Based on the spatial fluctuations of the orientational order, we have computed the Frank elastic constants for prolate and oblate ellipsoids and compared them to the affine transformation model. The affine transformation model predicts the right order of magnitude of the twist and bend constant but not of the splay constant. In addition, we report the observation of a stable nematic phase at an aspect ratio as low as 2.5.
我们展示了一项关于硬旋转椭球体悬浮液的蒙特卡罗模拟研究。基于取向序的空间涨落，我们计算了长椭球体和扁椭球体的弗兰克弹性常数，并将它们与仿射变换模型进行了比较。仿射变换模型预测的扭曲和弯曲常数的量级是正确的，但展曲常数的量级不正确。此外，我们报告了在长宽比低至2.5时观察到稳定的向列相。
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