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arXiv 1005.3083cond-mat.softcond-mat.mtrl-sci
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外加电场下的Nematic liquid crystal动力学

Nematic liquid crystal dynamics under applied electric fields

B. F. de Oliveira, P. P. Avelino, F. Moraes, J. C. R. E. Oliveira

摘要:

在本文中,我们调查的动态液晶织构的二维液晶下施加电场,使用数值模拟进行公开可用的液晶算法(LICRA)的作者开发的。我们考虑正负介电各向异性和两种不同的可能性的方向的电场(平行和垂直于二维晶格)。我们确定了外加电场脉冲对液晶纹理网络的特征长度尺度和其他属性的演变的影响。特别是,我们表明,不同类型的缺陷后,电场被打开,这取决于电场的方向和介电各向异性的符号。

英文摘要:

In this paper we investigate the dynamics of liquid crystal textures in a two-dimensional nematic under applied electric fields, using numerical simulations performed using a publicly available LIquid CRystal Algorithm (LICRA) developed by the authors. We consider both positive and negative dielectric anisotropies and two different possibilities for the orientation of the electric field (parallel and perpendicular to the two-dimensional lattice). We determine the effect of an applied electric field pulse on the evolution of the characteristic length scale and other properties of the liquid crystal texture network. In particular, we show that different types of defects are produced after the electric field is switched on, depending on the orientation of the electric field and the sign of the dielectric anisotropy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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