Liquid Crystal Elastomer Waveguide Actuators
Abstract
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.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Apr 22, 2019
- Source ID
- 10.1002/adma.201901216
Entities
People
- Alexa S Kuenstler
- Hyunki Kim
- Ryan C Hayward
Organizations
- National Science Foundation
- Office of Naval Research
- University of Massachusetts