Optical manipulation of shape-morphing elastomeric liquid crystal microparticles doped with gold nanocrystals

被引：73

作者：

Sun, Yaoran ^{[1
,2
,3
]}

Evans, Julian S. ^{[1
,2
]}

Lee, Taewoo ^{[1
,2
]}

Senyuk, Bohdan ^{[1
,2
]}

Keller, Patrick ^{[2
,4
,5
]}

He, Sailing ^{[3
,6
]}

Smalyukh, Ivan I. ^{[1
,2
,7
]}

机构：

[1] Univ Colorado, Dept Phys, Mat Sci & Engn Program, Dept Elect Comp & Energy Engn, Boulder, CO 80309 USA

[2] Univ Colorado, Liquid Crystal Mat Res Ctr, Boulder, CO 80309 USA

[3] Zhejiang Univ, Ctr Opt & Electromagnet Res, Hangzhou 310058, Zhejiang, Peoples R China

[4] Univ Paris 06, Inst Curie, Ctr Rech, CNRS,UMR 168, F-75248 Paris 05, France

[5] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA

[6] Royal Inst Technol, Dept Electromagnet Engn, S-10044 Stockholm, Sweden

[7] Natl Renewable Energy Lab, Renewable & Sustainable Energy Inst, Boulder, CO 80309 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 100卷 / 24期

基金：

美国国家科学基金会;

关键词：

SURFACE; MICROSCOPY; ACTUATORS; NANORODS; OBJECTS;

D O I：

10.1063/1.4729143

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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]

引用

页数：5

共 29 条

[1] OBSERVATION OF A SINGLE-BEAM GRADIENT FORCE OPTICAL TRAP FOR DIELECTRIC PARTICLES [J].