The microscopic theory for BPI and BPII of the blue phase
Yang Guo-Chen (杨国琛)a, Cui Ying-Min (崔英敏)a, Liu Jian-Jun (刘建军)ab, Shen Man (沈曙曼)b
a Institute of Physics, Hebei University of Technology, Tianjin 300130, China; b Department of Physics, Hebei Normal University, Shijiazhuang 050016, China
Abstract A statistical theory of the blue phase of chiral liquid crystal is proposed. The form of the interaction potential between molecules is assumed to be the same as that used in the theory for cholesteric phase. Using the cell model of the liquid statistical theory, we deduced the distribution function of single molecule. The free energy of the system obtained has the same form as that of the Ginzberg－Landau phenomenology theory. The order-parameter tensors of BPI and BPII phases we calculated can be compared with the experimental results.
Received: 23 January 2003
Revised: 14 August 2003
Accepted manuscript online:
PACS:
61.30.Cz
(Molecular and microscopic models and theories of liquid crystal structure)
Yang Guo-Chen (杨国琛), Cui Ying-Min (崔英敏), Liu Jian-Jun (刘建军), Shen Man (沈曙曼) The microscopic theory for BPI and BPII of the blue phase 2004 Chinese Physics 13 212
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