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Programmable light-driven soft actuator enabled by structurally anisotropic liquid crystalline network
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DOI：10.1002/agt2.633.png)
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Abstract
En 中文
The design and fabrication of advanced soft actuators with programmable actuation are highly desirable in constructing intelligent soft robots. In this work, a programmable light-driven liquid crystalline network (LCN)-based soft actuator was judiciously designed and prepared by constructing structural anisotropy across the thickness of the film. A three-dimensional (3D) deformable LCN actuator was realized by polymerization-induced phase separation of small-molar-weight monomers and polymer networks. The resultant anisotropic LCN displays anisotropic microscale nanoporous architecture across the thickness in addition to uniform alignment at the molecular scale. The actuation behaviors of LCN film are tunable by adjusting the size and distribution of nanopores in LCN bulk via changing polymerization conditions and monomer components. More importantly, the nanoporous LCN film can be harnessed as a promising template to achieve diverse light responsiveness by changing the photothermal dyes via a feasible washing and refilling process, demonstrating a reprogrammable light-driven soft actuator. A programmable soft actuator with a light-driven liquid crystalline network (LCN) is developed. It features structural anisotropy and tunable actuation via nanopore adjustments. The LCN can be reprogrammed for diverse light responses by changing photothermal dyes, offering a versatile template for soft robotics. image
Keywords:
liquid crystal networks
programmable
soft actuator
structural anisotropy
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