期刊
APPLIED PHYSICS LETTERS
卷 100, 期 24, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4729143
关键词
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资金
- International Institute for Complex Adaptive Matter
- NSF [DMR-0820579, DMR-0844115, DMR-0847782]
- ANR [ANR-2010-INTB-904-01]
- CNRS-PICS Curie-Tsinghua project
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0847782] Funding Source: National Science Foundation
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [0820579] Funding Source: National Science Foundation
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. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4729143]
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