首页   系科介绍   师资队伍   科研团队   本科生教学   研究生培养   招聘信息   联系我们

Previous Next
 
首页 >> 学术报告

Field Induced Deformation of Smectic A Liquid Crystals

Professor Sookyung Joo(Old Dominion University,USA)
2014年6月10日(星期二)下午3:00-4:00  数学楼102报告厅
 
摘要:We study the Landau-de Gennes free energy to describe reorientation of director and layer structures of smectic A liquid crystals subjected to magnetic fields with various boundary conditions. At weak field, we prove the undulatory instability by the Gamma-convergence and bifurcation theory to the nonlinear system of Landau-de Gennes model for smectic liquid crystals. We find the critical field and oscillatory description of the undulations which are consistent with experimental results. When the applied field is sufficiently large, the smectic states are maintained, with the director parallel to the field. We perform numerical simulations to illustrate the results of our analysis and demonstrate the tilted layers and directors near the boundary at the equilibrium state. The three dimensional study for smectic liquid crystals under the magnetic field will be also discussed.
   
 
 
快捷链接 >>
 
系内资源 >>
 
教学园地 >>
 
  校外链接 >>    华师大-纽约大学联合数学研究中心    上海市数学会    中国数学会    美国数学会    欧洲数学会  
         
       Copyright 2012 All rights reserved    Department of Mathematics, East China Normal University    Tel: 86-21-54342609