Electrically controlled topological micro cargo transportation

被引:15
作者
Bhadwal, A. S. [1 ]
Mottram, N. J. [2 ]
Saxena, A. [1 ]
Sage, I. C. [1 ]
Brown, C. V. [1 ]
机构
[1] Nottingham Trent Univ, Sch Sci & Technol, SOFT Grp, Nottingham NG11 8NS, England
[2] Univ Strathclyde, Dept Math & Stat, Glasgow G1 1XH, Lanark, Scotland
关键词
LIQUID-CRYSTALS; DEFECTS; SURFACE;
D O I
10.1039/c9sm01956a
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We demonstrate electrically controlled linear translation and precision positioning of a colloidal particle in a soft matter device. The basis of transportation is the time dependent electric field reconfiguration and manipulation of a topological line defect between two distinct hybrid aligned nematic liquid crystal domains having opposing tilt orientations. Deliberately tuning an applied voltage relative to a low threshold value (5.7 V at 1 kHz) permits defect trapping of the colloidal particle and allows subsequent control over the particle's velocity and bidirectional linear movement over millimeter distances, without the need for externally imposed flow nor for lateral confining walls.
引用
收藏
页码:2961 / 2970
页数:10
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