Nematic order and phase transition dynamics under intense electric fields

被引：11
|
作者：
Amoddeo, Antonino [1 ]
Barberi, Riccardo [2 ,3 ]
Lombardo, Giuseppe [3 ]
机构：
[1] Univ Mediterranea Reggio Calabria, Dept Civil Energy Environm & Mat Engn, Reggio Di Calabria, Italy
[2] Univ Calabria, Dept Phys, I-87036 Arcavacata Di Rende, Italy
[3] Univ Calabria, CNR IPCF UOS Cosenza, I-87036 Arcavacata Di Rende, Italy
来源：
LIQUID CRYSTALS | 2013年 / 40卷 / 06期
关键词：
nematic liquid crystals modelling; orientational order; FEM; MMPDE; phase transitions; PARTIAL-DIFFERENTIAL-EQUATIONS; RESOLVED EXPERIMENTAL-ANALYSIS; LIQUID-CRYSTAL; MESH SELECTION; RECONSTRUCTION;
D O I：
10.1080/02678292.2013.783133
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Electrically induced order variations, occurring in the microseconds timescale, in nematic liquid crystals are framed within the Landau-de Gennes Q-tensor theory. We provide a numerical model implemented with a moving mesh finite element method and describe the order dynamics in a symmetric -cell subjected to very strong electric fields. Our simulations put in evidence bulk order reconstruction delocalisation and transient order lowering phenomena induced by intense applied electric fields, as well as first and second order characteristics of the splay bend transition.
引用
收藏
页码：799 / 809
页数：11
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