基于分子两体势研究向列相液晶的形变.该两体势是空间各向异性的并且依赖于液晶的弹性常数.理论处理中假定具有理想向列序,这意味着分子长轴取向方向与液晶指向矢是重合的,而总自由能等于总相互作用能.通过解析形式研究3种基本的弗雷德里克兹转变,得到了势参数与弹性常数的又一关系.通过Monte Carlo 模拟方法研究了新两体作用势所描写向列相的热力学性质.
参考文献
[1] | Maier W,Saupe A.Eine einfache molekular-statistische theorie der nematischen kristallinflüssigen phase[J].Teil I.Z Naturforsch,1959,14A:882-889. |
[2] | Maier W,Saupe A.Eine einfache molekular-statistische theorie der nematischen kristallinflüssigen phase[J].Teil Ⅱ.Z Naturforsch,1960,15A:287-292. |
[3] | Lebwohl P A,Lasher G.Nematic-liquid-crystal order-a Monte Carlo calculation[J].Phys.Rev.A,1972,A6(1):426-429. |
[4] | Stone A J.The Molecular Physics of Liquid Crystals[M].London:Academic Press,1979:51. |
[5] | Sheng P,Wojtowicz P J.Constant-coupling theory of nematic liquid crystals[J].Phys.Rev.A,1976,14(5):1883-1894. |
[6] | Gruhn T,Hess S.Monte Carlo simulation of the director field of a nematic liquid crystal with three elastic coefficients[J].Z.Naturforsch,1996,51A:1-9. |
[7] | Romano S.Elastic constants and pair potentials for nematogenic lattice models[J].International J.Modern Phys.B,1998,12(22):2305-2323. |
[8] | Luckhurst G R,Romano S.Computer simulation study of a nematogenic lattice model based on an elastic energy mapping of the pair potential[J].Liquid Crystals,1999,26(6):871-884. |
[9] | Barbero G,Evangelista L R,Ponti S.Subsurface deformations in nematic liquid crystals[J].Phys.Rev.E,1996,53(1):1265-1268. |
[10] | Ska(cˇ)ej G,Pergamenshchik V M,Alexe-Ionescu A L,et al.Subsurface deformations in nematic liquid crystals:The hexagonal lattice approach[J].Phys.Rev.E,1997,56(1):571-580. |
[11] | 张志东,张艳君.空间各向异性两体势向列相液晶形变研究[J].物理学报,2004,53(8):2670-2675. |
[12] | Kilian A.3-D computer-simulations of nematic droplets[J].Liq.Cryst.,1993,14 (4):1189. |
[13] | De Gennes P G,Prost J.The Physics of Liquid Crystals[M].2nd,edn.Oxford:Oxford University Press,1995:103. |
[14] | Metropolis N,Rosenbluth A W,Rosenbluth M N,et al.Equation of state calculations by fast computing machines[J].J.Chem.Phys.,1953,21(6):1087-1092. |
[15] | Zannoni C.The Molecular Physics of Liquid Crystals[M].London:Academic Press,1979:51-84. |
[16] | Zannoni C.The Molecular Physics of Liquid Crystals[M].London:Academic Press,1979:191-220. |
[17] | Fabbri U,Zannoni C.A Monte Carlo investigation of the Lebwohl-Lasher lattice model in the vicinity of its orientational phase transition[J].Mol.Phys.,1986,58(4):763-788. |
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