Optically enriched and guided dynamics of active skyrmions

Optically enriched and guided dynamics of active skyrmions

Light provides a powerful means of controlling physical behavior of materials but is rarely used to power and guide active matter systems. We demonstrate optical control of liquid crystalline topological solitons dubbed "skyrmions", which recently emerged as highly reconfigurable inanimate...

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Veröffentlicht in:Optics express 2020-03, Vol.28 (5), p.6306-6319
Hauptverfasser: Sohn, Hayley R O, Liu, Changda D, Voinescu, Robert, Chen, Zezhang, Smalyukh, Ivan I
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container_end_page 6319
container_issue 5
container_start_page 6306
container_title Optics express
container_volume 28
creator Sohn, Hayley R O
Liu, Changda D
Voinescu, Robert
Chen, Zezhang
Smalyukh, Ivan I
description Light provides a powerful means of controlling physical behavior of materials but is rarely used to power and guide active matter systems. We demonstrate optical control of liquid crystalline topological solitons dubbed "skyrmions", which recently emerged as highly reconfigurable inanimate active particles capable of exhibiting emergent collective behaviors like schooling. Because of a chiral nematic liquid crystal's natural tendency to twist and its facile response to electric fields and light, it serves as a testbed for dynamic control of skyrmions and other active particles. Using ambient-intensity unstructured light, we demonstrate large-scale multifaceted reconfigurations and unjamming of collective skyrmion motions powered by oscillating electric fields and guided by optically-induced obstacles and patterned illumination.
doi_str_mv 10.1364/OE.382845
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title Optically enriched and guided dynamics of active skyrmions
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