马朗戈尼效应
执行机构
材料科学
机器人
表面张力
机械工程
计算机科学
纳米技术
人工智能
工程类
物理
量子力学
作者
Hai Lin,Yongqiang Qian,Peidi Zhou,Jian Lin,Zhiling Luo,Wei Zhang,Luzhuo Chen
出处
期刊:Small
[Wiley]
日期:2024-04-09
标识
DOI:10.1002/smll.202400906
摘要
Abstract Marangoni actuators that are propelled by surface tension gradients hold significant potential in small‐scale swimming robots. Nevertheless, the release of “fuel” for conventional chemical Marangoni actuators is not easily controllable, and the single swimming function also limits application areas. Constructing controllable Marangoni robots with multifunctions is still a huge challenge. Herein, inspired by water striders, electricity‐driven strategies are proposed for a multifunctional swimming Marangoni robot (MSMR), which is fabricated by super‐aligned carbon nanotube (SACNT) and polyimide (PI) composite. The MSMR consists of a Marangoni actuator and air‐ambient actuators. Owing to the temperature gradient generated by the electrical stimulation on the water surface, the Marangoni actuators can swim controllably with linear, turning, and rotary motions, mimicking the walking motion of water striders. In addition, the Marangoni actuators can also be driven by light. Importantly, the air‐ambient actuators fabricated by SACNT/PI bilayer structures demonstrate the function of grasping objects on the water surface when electrically Joule‐heated, mimicking the predation behavior of water striders. With the synergistic effect of the Marangoni actuator and air‐ambient actuators, the MSMR can navigate mazes with tunnels and grasp objects. This research will provide a new inspiration for smart actuators and swimming robots.
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