A Multifunctional Dye-doped Liquid Crystal Polymer Actuator Light-Guided Transportation, Turning in Locomotion, and Autonomous Motion

Abstract : A strip of a liquid crystal elastomer doped with a near-infrared dye with one side crosslinked monodomain and the other crosslinked polydomain along the thickness behaves like a multifunctional photoactuator without the need for a support. A flat strip with two ends fixed on substrate surface forms a moving bump under laser scanning, which can be used as light-fueled conveyor to transport an object. Cutting off and laser scanning the bump with two free ends makes a soft and flexible millimeter-scale crawler that can not only move straight and climb an inclined surface, but also undergo light-guided turning to right or left as a result of combined out-of-plane and in-plane actuation. Based on the self-shadowing mechanism, with one end of the strip fixed on substrate surface, it can execute a variety of autonomous arm-like movements under constant laser illumination, such as bending-unbending and twisting, depending on the laser incident angles with respect to the strip actuator.
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https://hal-univ-rennes1.archives-ouvertes.fr/hal-01879769
Contributor : Laurent Jonchère <>
Submitted on : Monday, September 24, 2018 - 12:01:20 PM
Last modification on : Tuesday, September 17, 2019 - 11:02:02 AM

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Feijie Ge, Rong Yang, Xia Tong, Franck Camerel, Yue Zhao. A Multifunctional Dye-doped Liquid Crystal Polymer Actuator Light-Guided Transportation, Turning in Locomotion, and Autonomous Motion. Angewandte Chemie International Edition, Wiley-VCH Verlag, 2018, 57 (36), pp.11758-11763. ⟨10.1002/anie.201807495⟩. ⟨hal-01879769⟩

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