Wang Xueting, Zhao Wei, Li Xinlin, Liu Liwu, Leng Jinsong, Liu Yanju
Department of Astronautical Science and Mechanics, Harbin Institute of Technology (HIT), Harbin 150080, People's Republic of China.
Centre for Composite Materials and Structures, Harbin Institute of Technology (HIT), Harbin 150080, People's Republic of China.
ACS Appl Mater Interfaces. 2024 Nov 20;16(46):63894-63903. doi: 10.1021/acsami.4c12834. Epub 2024 Nov 5.
Soft actuators with biomimetic self-regulatory intelligence have garnered significant scientific interest due to their potential applications in robotics and advanced functional devices. We present a multistimuli-responsive actuator made from a carbon nitride/carbon nanotube (CN/CNTs) composite film. This film features a molecular switch based on reversible hydrogen bonds, whose asymmetric distribution endows the film with the ability to absorb water unevenly and convert molecular motion into macroscopic movement. By incorporating carboxylated CNTs, the film demonstrates improved mechanical properties and actuation performance. Under ambient humidity stimuli, the actuator can autonomously generate walking and tumbling motions. The CN/CNTs composite film's actuating behaviors are programmable, enabling diverse deformation modes and complex biomimetic movements. Additionally, the film exhibits excellent photothermal conversion efficiency (74.10 °C/s), allowing for temperature and light-responsive actuation, which can be remotely controlled in real time. These features have enabled the creation of soft robots capable of complex biomimetic actions such as jumping, directional movement, and transporting objects. This research broadens the potential applications of CN-based actuators and paves the way for the development of intelligent soft robots.
具有仿生自调节智能的软驱动器因其在机器人技术和先进功能设备中的潜在应用而引起了科学界的广泛关注。我们展示了一种由氮化碳/碳纳米管（CN/CNTs）复合薄膜制成的多刺激响应驱动器。该薄膜具有基于可逆氢键的分子开关，其不对称分布使薄膜具有不均匀吸水的能力，并将分子运动转化为宏观运动。通过引入羧基化碳纳米管，薄膜的机械性能和驱动性能得到了改善。在环境湿度刺激下，驱动器能够自主产生行走和翻滚运动。CN/CNTs复合薄膜的驱动行为是可编程的，能够实现多种变形模式和复杂的仿生运动。此外，该薄膜表现出优异的光热转换效率（74.10℃/s），可实现温度和光响应驱动，并可实时远程控制。这些特性使得能够制造出能够进行复杂仿生动作（如跳跃、定向移动和搬运物体）的软机器人。这项研究拓宽了基于CN的驱动器的潜在应用范围，并为智能软机器人的发展铺平了道路。
