Saturn ring defect around a spherical particle immersed in a nematic liquid crystal
Saturn ring defect around a spherical particle immersed in a nematic liquid crystal
复制标题
浸入向列液晶中的球形颗粒周围的土星环缺陷
DOI:
10.1007/s00526-021-02091-6
复制
发表时间:
2021
影响因子:
2.1
通讯作者:
Lamy, Xavier
中科院分区:
文献类型:
--
作者:
Alama, Stan;Bronsard, Lia;Golovaty, Dmitry;Lamy, Xavier
We consider a nematic liquid crystal occupying the three-dimensional domain in the exterior of a spherical colloid particle. The nematic is subject to Dirichlet boundary conditions that enforce orthogonal attachment of nematic molecules to the surface of the particle. Our main interest is to understand the behavior of energy-critical configurations of the Landau–de GennesQ-tensor model in the limit of vanishing correlation length. We demonstrate existence of configurations with a single Saturn-ring defect approaching the equator of the particle and no other line or point defects. We show this by analyzing asymptotics of energy minimizers under two symmetry constraints: rotational equivariance around the vertical axis and reflection across the horizontal plane. Energy blow-up at the ring defect is a significant obstacle to constructing well-behaved comparison maps needed to eliminate the possibility of point defects. The boundary estimates we develop to address this issue are new and should be applicable to a wider class of problems.
登录
查看更多内容
DOI:
--
发表时间:
2016
期刊:
影响因子:
--
作者:
Andres A Contreras Marcillo;X. Lamy;Rémy Rodiac
通讯作者:
Rémy Rodiac
DOI:
--
发表时间:
1998
期刊:
Proceedings of the Royal Society of Edinburgh: Section A Mathematics
影响因子:
--
作者:
Anne Beaulieu;R. Hadiji
通讯作者:
R. Hadiji
影响因子:
2.5
作者:
N. André;I. Shafrir
通讯作者:
N. André;I. Shafrir
影响因子:
2.5
作者:
J. Ball;A. Zarnescu
通讯作者:
J. Ball;A. Zarnescu
影响因子:
1.8
作者:
Fukuda, J;Yoneya, M;Yokoyama, H
通讯作者:
Yokoyama, H