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Optical manipulation of shape-morphing elastomeric liquid crystal microparticles doped with gold nanocrystals
Univ Colorado, Boulder, USA ; Zhejiang Univ, Hangzhou. Zhejiang, Peoples R China .
Univ Colorado, Boulder, USA .
Univ Colorado, Boulder, USA .
Univ Colorado, Boulder, USA .
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2012 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 100, no 24, 241901- p.Article in journal (Refereed) Published
Abstract [en]

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. [http://dx.doi.org/10.1063/1.4729143]

Place, publisher, year, edition, pages
2012. Vol. 100, no 24, 241901- p.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
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URN: urn:nbn:se:kth:diva-98939DOI: 10.1063/1.4729143ISI: 000305269200023Scopus ID: 2-s2.0-84863308849OAI: oai:DiVA.org:kth-98939DiVA: diva2:540713
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QC 20120711

Available from: 2012-07-11 Created: 2012-07-05 Last updated: 2017-12-07Bibliographically approved

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