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

Angewandte Chemie
Feijie GeYue Zhao

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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Citations

Oct 15, 2019·Advanced Materials·Zhen JiangLuke A Connal
Mar 14, 2020·Angewandte Chemie·Zhen JiangLuke A Connal
Aug 12, 2020·Chemical Society Reviews·M Pilz da CunhaA P H J Schenning
Oct 6, 2019·Nature Communications·Bo ZuoHong Yang
Oct 2, 2020·Advanced Science·Zhen JiangLuke A Connal
Mar 7, 2020·Advanced Materials·Joselle M McCrackenTimothy J White
Aug 28, 2019·Chemical Communications : Chem Comm·Marina Pilz da CunhaMichael G Debije
Nov 9, 2019·Nature Communications·Hao ZengArri Priimagi
Feb 16, 2021·ACS Applied Materials & Interfaces·Pingping FengBotao Song
Feb 25, 2021·Advanced Materials·Jiajia YangQuan Li

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