Microfiber Actuators With Hot‐Pressing‐Programmable Mechano‐Photothermal Responses for Electromagnetic Perception

作者：Mengjie Wu, Xinran Zhou, Jiwei Zhang, Luyun Liu, Shuang Wang, Liming Zhu, Zechang Ming, Yufan Zhang, Yong Xia, Weikang Li, Zijie Zhou, Minghui Fan, Jiaqing Xiong · 发表于：Advanced Materials · 年份：2024 · DOI：10.1002/adma.202409606 · 被引用次数：25 · 研究领域：Advanced Sensor and Energy Harvesting Materials、Advanced Materials and Mechanics、Micro and Nano Robotics

Abstract Electromagnetic radiation (EMR) is a ubiquitous harm and hard to detect dynamically in multiple scenarios. A mechano‐photothermal cooperative microfiber film (MFF) actuator is developed that can synchronously detect EMR with high reliability. The programmable actuation is deployed by a hot‐pressing methodology, achieving the MFF with moderate modulus (378 MPa) and superior toughness (87.26 MJ m −3 ) that ensure superior response (0.068 cm −1 s −1 ) and bending curvature (0.63 cm −1 ). A secondary hot‐pressing can further program the actuation behavior with black phosphorus local photothermal enhancement patterns to achieve 2D–3D transformable geometries. An amphibious robot with a land–water adaptive locomotion mechanism is designed by programming the MFFs. It can crawl on land and locomote on water with a velocity up to ≈1.8 mm s −1 , and ≈2.39 cm s −1 , respectively. Employing the conductive fabric layer of the actuator with electromagnetic induction effect, the amphibious robot can synchronously perceive environmental EMR with sensitivity up to 99.73% ± 0.15% during locomotion, with superior adaptability to EMR source intensity (0.1 to 3000 W) and distance (≈9 m) compared to a commercial EMR detector. This EMR detective microfiber actuator can inspire a new direction of environment‐interactive smart materials, and soft robots with multi‐scenario adaptivity and autonomous environment perceptivity.