| 十字形液晶分子系统各向同性相至双轴向列相的相变 |
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| 引用本文： | 王焕景,刘红.十字形液晶分子系统各向同性相至双轴向列相的相变[J].南京师大学报,2011(2):39-44. |
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| 作者姓名： | 王焕景 刘红 |
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| 作者单位： | 南京师范大学物理科学与技术学院; |
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| 基金项目： | 江苏省普通高校自然科学研究项目(07JKD140095) |
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| 摘 要： | 本文考虑十字形液晶分子组成的系统,假设分子间相互作用为棒与棒相互作用的叠加,且相互作用强度系数彼此独立.利用平均场理论,得到系统在温度和分子结构参数平面内的3类相图:第一类相图中只有一个直接由各向同性相进入双轴相的Landau点,相变为二级相变.第二类相图中Landau点扩展为Landau曲线,为一级相变.第三类相图中...
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| 关 键 词： | 双轴向列相液晶 相变 分子相互作用 |
Phase Transitions From Isotropic to Biaxial Phase of Cross-Like Nematic Liquid Crystal Molecules |
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| Wang Huanjing,Liu Hong.Phase Transitions From Isotropic to Biaxial Phase of Cross-Like Nematic Liquid Crystal Molecules[J].Journal of Nanjing Normal University(Natural Science Edition),2011(2):39-44. |
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| Authors: | Wang Huanjing Liu Hong |
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| Institution: | Wang Huanjing,Liu Hong(School of Physics and Technology,Nanjing Normal University,Nanjing 210046,China) |
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| Abstract: | A system composed of cross-like nematic liquid crystal molecules is considered.Suppose the molecular interaction is the superposition of interactions among molecular rods,and the strengths of interactions are independent.Within the mean field theory,three types of phase diagrams in the plane of temperature and the molecular structure parameters are obtained.In the first type of phase diagram,there appears only one Landau point at which system enter directly from isotropic to biaxial phase by second order ph... |
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| Keywords: | biaxial nematic liquid crystal phase transition molecular interaction |
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