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1. 河北工业大学 理学院 天津,300401
2. 河北冀雅电子有限公司,河北 石家庄
收稿日期:2013-01-14,
修回日期:2013-02-19,
网络出版日期:2013-01-25,
纸质出版日期:2013-06-15
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李健, 周璇, 王晓燕, 徐洪亮, 张志东. 双轴向列相液晶中畴壁的研究[J]. 液晶与显示, 2013,28(3): 301-304
LI Jian, ZHOU Xuan, WANG Xiao-yan, XU Hong-liang, ZHANG Zhi-dong. Domain Walls in Bixial Nematic Liquid Crystals[J]. , 2013,28(3): 301-304
李健, 周璇, 王晓燕, 徐洪亮, 张志东. 双轴向列相液晶中畴壁的研究[J]. 液晶与显示, 2013,28(3): 301-304 DOI: 10.3788/YJYXS20132803.0301.
LI Jian, ZHOU Xuan, WANG Xiao-yan, XU Hong-liang, ZHANG Zhi-dong. Domain Walls in Bixial Nematic Liquid Crystals[J]. , 2013,28(3): 301-304 DOI: 10.3788/YJYXS20132803.0301.
利用双轴向列相液晶的连续体弹性理论研究畴壁
在双轴相中发现了9种不同的畴壁。这些畴壁的形状与单轴向列相中的畴壁相似。忽略展曲形变和弯曲形变之间的弹性各向异性
发现双轴相中的展-弯曲壁与扭曲壁有相似的解析解。通过对展-弯曲壁进行数值计算
发现弹性常数的比值会影响畴壁的宽度。
Within the framework of the continuum elastic theory of biaxial nematic liquid crystals
domain walls were studied. Nine different domain walls in biaxial nematics were found. The shapes of these walls are similar to those in uniaxial nematics. By neglecting the elastic anisotropy concerned with splay and bend distortions
it is found that the analytic solutions of splay-bend walls are similar to that of twist walls. The numerical solutions of splay-bend walls show that the ratio of the elastic constants affects the width of the walls.
朱斌,黄佩,胡兰萍,等.一些含希夫碱基团的不对称弯曲型液晶分子的合成和相变研究 [J]. 液晶与显示, 2010, 25(3):305-310.[2] 李增俊,沈冬.含偶氮基团的不对称弯曲型液晶分子的合成及其光谱特性 [J]. 液晶与显示, 2011,26(3):274-280.[3] 李双全,沈冬.噻二唑类弯曲型液晶分子的合成和性能研究 [J]. 液晶与显示, 2011,26(4): 421-426.[4] 刘红,王慧.双轴性向列相液晶的相变理论 [J]. 物理学报, 2005,54(03):1306-1312.[5] Xiang Y, Goodby J W, Grtz V, et al. Revealing the uniaxial to biaxial nematic liquid crystal phase transition via distinctive electroconvection [J].Appl. Phys. Lett., 2009, 94 (19):193507(1-3).[6] 董寅,沈冬,郑致刚.含偶氮基团的弯曲型分子的光谱特性研究 [J]. 液晶与显示, 2012,27(1):14-20.[7] 张志东, 叶文江, 张鹭.表面沟槽诱导双轴向列相液晶的弹性畸变 [J]. 液晶与显示, 2010,25(1):1-4.[8] Saupe A. Elastic and flow properties of biaxial nematics [J]. J. Chem. Phys., 1981, 75(10):5118-5124.[9] De Gennes P G, Prost J. The Physics of Liquid Crystals[M].2nd edn. Oxford: Oxford University Press, 1993.[10] Assender H E, Windle A H. Domain structures in magnetically orientated liquid crystalline polymers [J]. Polymer,1997, 38(3):677-688.[11] 王英涛,周璇,张志东.双轴向列相Fréedericksz转变的Monte Carlo模拟 [J] .液晶与显示, 2010, 27(2):144-152.[12] hiccoli C, Pasini P, Feruli I, et al. Biaxial nematic droplets and their optical texture. A lattice model computer simulation study [J]. Mol. Cryst. Liq. Cryst., 2005, 441(1): 319-328.[13] Berardi R, Muccioli L, Orlandi S, et al. Computer simulations of biaxial nematics [J]. J. Phys. Condens. Matter,2008, 20(46):1-16.
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