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Guided Folding of Nematic Liquid Crystal Elastomer Sheets into 3D via Patterned 1D Microchannels.

Advanced materials (Deerfield Beach, Fla.) (2016-10-08)
Yu Xia, Gerardo Cedillo-Servin, Randall D Kamien, Shu Yang
ABSTRACT

Two-dimensional liquid-crystal elastomer (LCE) sheets with preprogrammed topological defects are prepared by aligning liquid-crystal monomers within micropatterned epoxy channels, followed by photopolymerization. Upon heating, the LCE films form various three-dimensional structures in agreement with theoretical design. The miniaturized LCE actuators offer large-area work capacities (≈1.05 J m-2 ) to lift over 700 times their own weight.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
4′-Pentyl-4-biphenylcarbonitrile, liquid crystal (nematic), 98%