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Light‐Driven Self‐Oscillating Actuators with Phototactic Locomotion Based on Black Phosphorus Heterostructure
Author(s) -
Hu Ying,
Ji Qixiao,
Huang Majing,
Chang Longfei,
Zhang Chengchu,
Wu Guan,
Zi Bin,
Bao Ningzhong,
Chen Wei,
Wu Yucheng
Publication year - 2021
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.202108058
Subject(s) - actuator , photothermal effect , black phosphorus , materials science , artificial muscle , soft robotics , photothermal therapy , oscillation (cell signaling) , optoelectronics , computer science , control theory (sociology) , nanotechnology , artificial intelligence , chemistry , biochemistry , control (management)
Abstract Developing self‐oscillating soft actuators that enable autonomous, continuous, and directional locomotion is significant in biomimetic soft robotics fields, but remains great challenging. Here, an untethered soft photoactuators based on covalently‐bridged black phosphorus‐carbon nanotubes heterostructure with self‐oscillation and phototactic locomotion under constant light irradiation is designed. Owing to the good photothermal effect of black phosphorus heterostructure and thermal deformation of the actuator components, the new actuator assembled by heterostructured black phosphorus, polymer and paper produces light‐driven reversible deformation with fast and large response. By using this actuator as mechanical power and designing a robot configuration with self‐feedback loop to generate self‐oscillation, an inchworm‐like actuator that can crawl autonomously towards the light source is constructed. Moreover, due to the anisotropy and tailorability of the actuator, an artificial crab robot that can simulate the sideways locomotion of crabs and simultaneously change color under light irradiation is also realized.