MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self‑Powered Motion Sensing  

作　　者：Yu‑Ze Wang Yu‑Chang Wang Ting‑Ting Liu Quan‑Liang Zhao Chen‑Sha Li Mao‑Sheng Cao 

机构地区：[1]School of Materials Science and Engineering,Beijing Institute of Technology,Beijing 100081,People’s Republic of China [2]School of Materials Science and Engineering,Peking University,Beijing 100871,People’s Republic of China [3]School of Mechanical and Material Engineering,North China University of Technology,Beijing 100144,People’s Republic of China [4]Key Laboratory of Functional Inorganic Material Chemistry,Ministry of Education of the People’s Republic of China,Heilongjiang University,Harbin 150080,People’s Republic of China

出　　处：《Nano-Micro Letters》2025年第3期265-279,共15页纳微快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.52373280,52177014,51977009,52273257)。

摘　　要：Polymeric microwave actuators combining tissue-like softness with programmablemicrowave-responsive deformation hold great promise for mobile intelligentdevices and bionic soft robots. However, their application is challenged by restricted electromagneticsensitivity and intricate sensing coupling. In this study, a sensitized polymericmicrowave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx(MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique spacechargepolarization and interfacial polarization, resulting in significant improvements of230% in the dielectric loss factor and 830% in the apparent efficiency of electromagneticenergy harvest. The sensitized microwave actuation demonstrates as the shortenedresponse time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (upto 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combinesdriving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of ~ 3 mV) duringactuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approachfor developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关 键 词：Microwave absorption Electromagnetic response Energy harvest SELF-SENSING Soft actuator 

分 类 号：TQ317[化学工程—高聚物工业] O441[理学—电磁学]