Bioinspired MXene-Based Soft Actuators Exhibiting Angle-Independent Structural Color  

作　　者：Pan Xue Yuanhao Chen Yiyi Xu Cristian Valenzuela Xuan Zhang Hari Krishna Bisoyi Xiao Yang Ling Wang Xinhua Xu Quan Li 

机构地区：[1]School of Materials Science and Engineering,Tianjin University,Tianjin 300350,People’s Republic of China [2]Institute of Advanced Materials,School of Chemistry and Chemical Engineering,Tech Key Laboratory for Biomedical Research,Southeast University,and Jiangsu Province Hi,Nanjing 211189,People’s Republic of China [3]Advanced Materials and Liquid Crystal Institute and Chemical Physics Interdisciplinary Program,Kent State University,Kent,OH 44242,USA

出　　处：《Nano-Micro Letters》2023年第1期1-13,共13页纳微快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.51973155,52173181,and 52173262);Jiangsu Innovation Team Program,Natural Science Foundation of Tianjin(20JCYBJC00810).

摘　　要：In nature,many living organisms exhibiting unique structural coloration and soft-bodied actuation have inspired scientists to develop advanced structural colored soft actuators toward biomimetic soft robots.However,it is challenging to simultaneously biomimic the angle-independent structural color and shape-morphing capabilities found in the plum-throated cotinga flying bird.Herein,we report biomimetic MXene-based soft actuators with angle-independent structural color that are fabricated through controlled self-assembly of colloidal SiO_(2) nanoparticles onto highly aligned MXene films followed by vacuum-assisted infiltration of polyvinylidene fluoride into the interstices.The resulting soft actuators are found to exhibit brilliant,angle-independent structural color,as well as ultrafast actuation and recovery speeds(a maximum curvature of 0.52 mm−1 can be achieved within 1.16 s,and a recovery time of~0.24 s)in response to acetone vapor.As proof-of-concept illustrations,structural colored soft actuators are applied to demonstrate a blue gripper-like bird’s claw that can capture the target,artificial green tendrils that can twine around tree branches,and an artificial multicolored butterfly that can flutter its wings upon cyclic exposure to acetone vapor.The strategy is expected to offer new insights into the development of biomimetic multifunctional soft actuators for somatosensory soft robotics and next-generation intelligent machines.

关 键 词：Bioinspired soft actuator Angle-independent structural color MXene liquid crystals Soft robotics 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]