Order Parameter Discretization in Metastable States of Hexatic Smectic B Liquid Crystal
Order Parameter Discretization in Metastable States of Hexatic Smectic B Liquid Crystal
复制标题
六方层列B液晶亚稳态有序参数离散化
DOI：
10.1143/jpsj.80.124603
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
K. M. Aoki and M. Yoneya
中科院分区：
文献类型：
--
作者：
高見利也;福留大貴;狐崎 創;K. M. Aoki and M. Yoneya
用分子动力学模拟方法研究了六角近晶B液晶(HexB)在较宽温度范围内的行为。除了热力学平衡的HexB相外，还存在多个亚稳态，其六重键取向级数C6比热力学平衡相小。C6的值是离散的，每个亚稳态具有不同的热力学特性。12和18重键取向级数C6n(n=2，3)在很大范围内满足标度关系C6n=C6σN。亚稳态的HexB态是嵌套的，每一层也有一个离散值的键级，形成了这些离散态作为一个整体。
Hexatic smectic B liquid crystal (HexB) is studied by molecular dynamics simulations for a wide range of temperatures. In addition to the thermodynamic equilibrium HexB phase, there exist multiple metastable states with a smaller sixfold bond orientational orderC6than the thermodynamic equilibrium phase. The values ofC6are discrete, with each metastable state having different thermodynamic characteristics. 12- and 18-fold bond orientational ordersC6n(n= 2, 3) satisfy the scaling relationC6n=C6σnfor a wide range. The metastable HexB states are nested and each layer also has a discrete value of bond order forming these discrete states as a whole.