期刊
ADVANCED MATERIALS
卷 31, 期 24, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201901216
关键词
actuators; liquid crystal elastomers; photoresponsive materials
类别
资金
- National Science Foundation [EFRI-ODISSEI 1332271]
- Office of Naval Research through the MURI on Photomechanical Materials [ONR N00014-18-1-2624]
While most photomechanical materials developed to date have relied on free-space illumination to drive actuation, this strategy fails when direct line-of-site access is precluded. In this study, waveguided light is harnessed by liquid crystal elastomer (LCE) nanocomposites to drive actuation. Using photo-chemical reduction of gold salts to plasmonic nanoparticles, prescription of photoresponsive regions within fibers of mono-domain LCEs is demonstrated with control over both the location along the fiber axis, as well as in the azimuthal direction. Due to localized photothermal heating provided by plasmonic absorption of waveguided light and resulting inhomogeneous thermally induced deformation of the LCE, reversible bending along multiple axes is demonstrated.
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