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Programming Photoresponse in Liquid Crystal Polymer Actuators with Laser Projector

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Details

Original languageEnglish
Article number1700949
JournalAdvanced Optical Materials
Volume6
Issue number1
Early online date2017
DOIs
Publication statusPublished - 2018
Publication typeA1 Journal article-refereed

Abstract

A versatile, laser-projector-based method is demonstrated for programming alignment patterns into monolithic films of liquid crystal polymer networks. Complex images can be photopatterned into the polymer films with sub-100 μm resolution, using relatively short exposure times. The method is further used to devise both photochemically and photothermally driven actuators that can undergo distinct light-induced shape changes, dictated by the programmed alignment patterns. Deformation modes such as buckling and coiling, as well as miniature robotic devices such as a gripper and a light-responsive octopod, are demonstrated. The reported technique enables easy and cost-effective programmable actuation with relatively high throughput, thus significantly facilitating the design and realization of functional soft robotic actuators.

Keywords

  • Azobenzene, Laser projectors, Liquid crystal, Patterning, Photoactuation, Photoalignment

Publication forum classification

Field of science, Statistics Finland

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