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Janus Soft Actuators with On–Off Switchable Behaviors for Controllable Manipulation Driven by Oil
- Song, Yun-yun, Liu, Yan, Jiang, Hao-bo, Xue, Jing-ze, Yu, Zhao-peng, Li, Shu-yi, Han, Zhi-wu, Ren, Lu-quan
- ACS applied materials & interfaces 2019 v.11 no.14 pp. 13742-13751
- actuators, cutting, ethanol, hydrophobicity, materials science, oils, robots
- Soft actuators have tremendous applications in diverse fields. Facile preparation, rapid actuation, and versatile actions are always pursued when developing new types of soft actuators. In this paper, we present a facile method integrating laser etching and mechanical cutting to prepare Janus actuators driven by oil. A Janus film with superhydrophobic and hydrophobic sides was fabricated successfully. By cutting the functional layer at the desired positions, a number of quintessential oil-driven soft devices were demonstrated. Furthermore, Janus actuators with surfaces of different wettabilities exhibited different swelling behaviors, and different media manifested different surface extensions; thus, these actuators are promising candidates for soft actuators and also realized on–off switchability between an oil/water mixture and ethanol. This study offers novel insight into the design of soft actuators, and this insight may be helpful for developing an oil-driven soft actuator that can be operated like a human finger to manipulate any object and extending stimuli-responsive applications for soft robotics.