Liquid-crystal enabled electrophoresis: Scenarios for driving and reconfigurable assembling of colloids

被引：12

作者：

Hernandez-Navarro, S. ^{[1
,3
]}

Tierno, P. ^{[2
,3
]}

Ignes-Mullol, J. ^{[1
,3
]}

Sagues, F. ^{[1
,3
]}

机构：

[1] Univ Barcelona, Dept Phys Chem, E-08028 Barcelona, Spain

[2] Univ Barcelona, Dept Struct & Constituents Matter, E-08028 Barcelona, Spain

[3] Univ Barcelona, IN2UB, Inst Nanosci & Nanotechnol, Barcelona, Spain

来源：

EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS | 2015年 / 224卷 / 07期

基金：

欧洲研究理事会;

关键词：

TOPOLOGICAL DEFECTS; NEMATIC EMULSIONS; ELECTRIC-FIELD; ACTIVE MATTER; MOTION; PARTICLES; PATTERNS; DEVICES;

D O I：

10.1140/epjst/e2015-02458-y

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate several examples of driving and steering of colloids when dispersed in nematic liquid crystals. The driving mechanism is based on the principle of nonlinear electrophoresis which is mediated by the asymmetry in the structure of the defects that the inclusions generate in the host elastic matrix. The steering mechanism originates in the photoactivation of the anchoring conditions of the nematic liquid crystal on one of the enclosing plates. As experimental realizations we first review a scenario of water microdroplets being phoretically transported for cargo release and chemical reaction. Steering is illustrated in terms of the reconfigurable assembly of colloidal particles, either in the form of asters or rotating-mills, commanded by predesigned patterns of illumination.

引用

页码：1263 / 1273

页数：11