Study of reversible curvature inversion of liquid crystal elastomer single film
발표자
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초록
내용
Multi-curvature transformation of a surface is an one of highly required functions to present complex shape as well as flexibility in locomotion for soft actuator. Here, we have demonstrated a one pot approach to fabricate a single film of liquid crystal elastomer(LCE) presenting reversible curvature transformation inversion with thermo-stimulus. Photo-crosslinking of reactive mixture including non-reactive mesogens provide a formation of A liquid crystal director is programmed on single film and a method capable of inducing a crosslinking density gradient through the thickness of LCE film. Because of the density gradient, the film shows intrinsic curvature that is deformed towards less dense part after extraction of the non-reactive mesogens. The results highlight the formation of density gradient is an easy but effective strategy to prepare single film that is capable of reversibly transforming in multi-shapes.