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Plasmonic‐Assisted Graphene Oxide Films with Enhanced Photothermal Actuation for Soft Robots
Advanced Functional Materials ( IF 19.0 ) Pub Date : 2020-02-19 , DOI: 10.1002/adfm.201910172
Yuanyuan Yang 1 , Yanting Liu 1 , Yajing Shen 1, 2
Affiliation  

Carbon‐based materials are widely used as light‐driven soft actuators relying on their thermal desorption or expansion. However, applying a passive layer in such film construction greatly limits the actuating efficiency, e.g., bending amplitude and speed. In this work, a dual active layer strengthened bilayer composite film made of graphene oxide (GO)–polydopamine (PDA)–gold nanoparticles (Au NPs)/polydimethylsiloxane (PDMS) is developed. In this film, the conventional passive layer is replaced by another AuNPs‐enhanced thermal responsive layer. When applying NIR light exposure, the whole film deforms controllably resulting from the water loss in the GO–PDA–Au NPs layer and thermal expansion in the PDMS layer. Benefiting from the dual active bilayer mechanism, the thin film's actuating efficiency is dramatically improved compared with that of conventional methods. Specifically, the bending amplitude is enhanced up to 173%, and the actuating speed is improved to 3.5‐fold. The soft actuator can act as an artificial arm with high actuating strength and can be used as a wireless gripper. Moreover, the film can be designed as soft robots with various locomotion modes including linear, rolling, and steering motions. The developed composite film offers new opportunities for biomimetic soft robotics as well as future applications.

中文翻译:

等离子辅助石墨烯氧化膜具有增强的光热驱动能力,适用于软机器人

碳基材料因其热解吸或膨胀而广泛用作光驱动软致动器。然而,在这种膜构造中施加钝化层极大地限制了致动效率,例如弯曲幅度和速度。在这项工作中,开发了由氧化石墨烯(GO)-聚多巴胺(PDA)-金纳米颗粒(Au NPs)/聚二甲基硅氧烷(PDMS)制成的双活性层增强双层复合膜。在该膜中,传统的无源层被另一个AuNPs增强的热响应层所代替。当应用NIR曝光时,由于GO–PDA–Au NPs层中的水分流失和PDMS层中的热膨胀,整个薄膜可控地变形。受益于双重主动双层机制,薄膜 与传统方法相比,其驱动效率得到了显着提高。具体来说,弯曲幅度提高到173%,操作速度提高到3.5倍。该软致动器可以用作具有高致动强度的人造手臂,并且可以用作无线抓手。此外,可以将影片设计为具有各种运动模式(包括线性,滚动和转向运动)的软机器人。研发的复合膜为仿生软机器人以及未来的应用提供了新的机会。可以将影片设计为具有各种运动模式(包括线性,滚动和转向运动)的软机器人。研发的复合膜为仿生软机器人以及未来的应用提供了新的机会。可以将影片设计为具有各种运动模式(包括线性,滚动和转向运动)的软机器人。研发的复合膜为仿生软机器人以及未来的应用提供了新的机会。
更新日期:2020-04-06
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