Optical Manipulation of Shape-Morphing Elastomeric Liquid Crystal Microparticles Doped with Gold Nanocrystals

Sun, Yaoran R.; Evans, Juliian S.; Lee, Taewoo; Senyuk, Bohhdan; Keller, Patrick; He, Sailing L.; Smalyukh, Ivan I.

doi:10.1063/1.4729143

Title: Optical Manipulation of Shape-Morphing Elastomeric Liquid Crystal Microparticles Doped with Gold Nanocrystals

Journal Article · Mon Jun 11 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4729143· OSTI ID:1050145

Sun, Yaoran R.; Evans, Juliian S.; Lee, Taewoo; Senyuk, Bohhdan; Keller, Patrick; He, Sailing L.; Smalyukh, Ivan I.

We demonstrate facile optical manipulation of shape of birefringent colloidal microparticles made from liquid crystal elastomers. Using soft lithography and polymerization, we fabricate elastomeric microcylinders with weakly undulating director oriented on average along their long axes. These particles are infiltrated with gold nanospheres acting as heat transducers that allow for an efficient localized transfer of heat from a focused infrared laser beam to a submicrometer region within a microparticle. Photothermal control of ordering in the liquid crystal elastomer using scanned beams allows for a robust control of colloidal particles, enabling both reversible and irreversible changes of shape. Possible applications include optomechanics, microfluidics, and reconfigurable colloidal composites with shape-dependent self-assembly.

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Research Organization:: National Renewable Energy Lab. (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), National Science Foundation (NSF)

DOE Contract Number:: AC36-08GO28308

OSTI ID:: 1050145

Report Number(s):: NREL/JA-5900-55925; APPLAB; TRN: US201218%%501

Journal Information:: Applied Physics Letters, Vol. 100, Issue 24; Related Information: Article No. 241901; ISSN 0003-6951

Country of Publication:: United States

Language:: English

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Title: Optical Manipulation of Shape-Morphing Elastomeric Liquid Crystal Microparticles Doped with Gold Nanocrystals

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