Reconfigurable Periodic Liquid Crystal Defect Array via Modulation of Electric Field

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Topological defects in liquid crystal (LC) phases have been considered critical from the areas in topology and self-assembly, as well as in applications such as optical vortex generation, particle manipulation system, and template for material micropatterning. An approach for generating and modulating various patterns of LC defects is presented in a single cell by varying the electrode configurations. Periodic LC defect arrays including -1 topological defect in the nematic phase can be achieved by simply adjusting crossed electrodes. Specifically, the fourfold symmetric -1 defect pattern is used as a vortex beam generator and a particle trapping agent with control either of the frequency of the applied electric field or the temperature. The approach suggested here would be beneficial to extend the use of LC patterns in lithographic tools and optoelectronic devices.
Publisher
WILEY
Issue Date
2019-11
Language
English
Article Type
Article
Citation

ADVANCED MATERIALS TECHNOLOGIES, v.4, no.11, pp.1900454

ISSN
2365-709X
DOI
10.1002/admt.201900454
URI
http://hdl.handle.net/10203/270035
Appears in Collection
PH-Journal Papers(저널논문)NT-Journal Papers(저널논문)
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