Accéder au contenu
MilliporeSigma

Liquid Crystal Elastomer Waveguide Actuators.

Advanced materials (Deerfield Beach, Fla.) (2019-04-24)
Alexa S Kuenstler, Hyunki Kim, Ryan C Hayward
RÉSUMÉ

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.

MATÉRIAUX
Référence du produit
Marque
Description du produit

Sigma-Aldrich
Dipropylamine, 99%
Sigma-Aldrich
2-(Diisopropylamino)ethyl methacrylate, 97%, contains ~100 ppm monomethyl ether hydroquinone as inhibitor