Chiroptical 3D Actuators for Smart Sensors

Seung Hui Han; Seok-In Lim; Ki-Hyun RyuJahyeon KooDong-Gue KangKwang-Un JeongSeung-Yeol JeonDae-Yoon Kim

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Chiroptical 3D Actuators for Smart Sensors

机译：Chiroptical 3D Actuators for Smart Sensors

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Examples of anisotropic movement paired with helical geometry abound inthe animal and plant kingdoms are used for a variety of reasons, such asdiverse social signaling directed at conspecifics or camouflage to avoid predation.Inspired by these natural phenomena, a smart sensor is developed witha chiroptical 3D actuator that can fold, bend, and twist in response to externalstimuli, reflecting light of specific wavelengths, and possessing circularpolarization properties. Chirophotonic crystal actuators are constructed withan asymmetric Janus structure and are fabricated by self-assembly, screenprinting, and in situ photopolymerization. The optically active layer consistsof cholesteric liquid crystal polymer, and the mechanically active layer iscomposed of a polymeric gel thin film. The programmed in-planar and outof-planar asymmetric Janus structures control the directionality of variousshapes morphing from 2D to 3D. Finite element simulations allow to predictthe shape changes associated with these chirophotonic crystal actuators:flower blooming, tendril climbing, eagle hunting, ant lifting, and inchwormmoving motions. By utilizing the chirophotonic crystal actuator, a reusableand portable methanol-laced water identifier is developed.

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来源
《Advanced functional materials》 |2023年第3期|2210680.1-2210680.11|共11页
作者
Seung Hui Han; Seok-In Lim; Ki-Hyun RyuJahyeon KooDong-Gue KangKwang-Un JeongSeung-Yeol JeonDae-Yoon Kim;
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作者单位

Carbon Composite Materials Research CenterKorea Institute of Science and TechnologyWanju 55324, Republic of Korea;

Functional Composite Materials Research CenterKorea Institute of Science and TechnologyWanju 55324, Republic of Korea;

Functional Composite Materials Research CenterKorea Institute of Science and TechnologyWanju 55324, Republic of Korea, Department of Polymer-Nano Science and TechnologyDepartment of Nano Convergence EngineeringJeonbuk National UniversityJeonju 54896, RepuDepartment of Polymer-Nano Science and TechnologyDepartment of Nano Convergence EngineeringJeonbuk National UniversityJeonju 54896, Republic of Korea;

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正文语种英语
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关键词
helical nanostructures; heterogeneous assembly; selective reflection; smart sensors; soft actuators;

Chiroptical 3D Actuators for Smart Sensors

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