利用φ映射方法得出了计算向错线自由能公式和向错强度为m=±1的向错点自由能公式,从而弥补了挖掉奇异区域来估算自由能的不足.研究结果表明,液晶在有向错线的结构中指向矢场更多地出现正的向错强度状态.随着k24的增大,m=+1的向错点的自由能将降低,而m=-1的向错点的自由能将增大.
参考文献
[1] | Kleman M.Points lines and Walls:in Liquid Crystals,Magnetic Systems and Various Disordered Media[M].New York:J.Wiley,1983. |
[2] | 王新久.液晶的结构、缺陷与织构[J].液晶与显示,1996,11(1):1-15. |
[3] | 王丽,张成,幺周石,等.液晶衍射光栅的理论分析[J].液晶与显示,2006,21(2):113-118. |
[4] | 刘金伟,张素花,杨宇婴,等.表面极化对阑值电压和饱和电压的影响[J].液晶与显示,2007,22(3):245-251. |
[5] | Mermin N D.The topological theory of defects in ordered media[J].Rev.Mod.Phys.,1979,51(3):591-648. |
[6] | Dennes P G.The Physics of Liquid Crystals[M].London:Oxford University,1974. |
[7] | Yang G H,Duan Y S.The origin and bifurcation of disclinations in the gauge field theory of disclination and disclination continuum[J].Int.J.Eng.Sci.,1999,37:1037-1050. |
[8] | Duan Y S,Yang G H,Jing Y.The origin and bifurcation of space-time defects in the early university[J].Gen.Rel.Gray.,1997,29(6):715-725. |
[9] | Nabarro F R N.Theory of Crystal Dislocations[M].London:Oxford University Press,1976. |
[10] | Lubensky T C,Pettey David,Currier Nathan.Topological defects and interactions in nematic emulsions[J].Phys.Rev.E,1998,57(1):610-625. |
[11] | Yang G H,Zhang H,Duan Y S.Topological aspect and bifurcation of disclination lines in two-dimensional liquid crystals[J].Commun.Theor.Phs.,2002,37(5):513-518. |
[12] | Duan Y S,Yang G H,Jiang Y.The quantization of the space-time defects in the early universe[J].Helv.Phys.Acta.,1997,70:565-577. |
[13] | Hiroyuki Mori,Hiizu Nakanishi.On the stability of topologically non-trivial point defects[J].J.Phys.Sco.Jpn.,1988,57(4):1281-1286. |
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