Electrically controlled topological micro cargo transportation

Bhadwal, A, Mottram, N, Saxena, A, Sage, I and Brown, C ORCID: https://orcid.org/0000-0002-1559-3238, 2020. Electrically controlled topological micro cargo transportation. Soft Matter, 16 (12), pp. 2961-2970. ISSN 1744-683X

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Abstract

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.

Item Type:	Journal article
Publication Title:	Soft Matter
Creators:	Bhadwal, A., Mottram, N., Saxena, A., Sage, I. and Brown, C.
Publisher:	Royal Society of Chemistry
Date:	2020
Volume:	16
Number:	12
ISSN:	1744-683X
Identifiers:	Number Type 10.1039/C9SM01956A DOI 1295823 Other
Rights:	The article is full open access under the following terms: https://creativecommons.org/licenses/by-nc/3.0/
Divisions:	Schools > School of Science and Technology
Record created by:	Linda Sullivan
Date Added:	28 Feb 2020 12:13
Last Modified:	17 Jul 2020 15:44
URI:	https://irep.ntu.ac.uk/id/eprint/39329

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