液态金属变色龙舌头:调节表面张力和相变,实现生物启发式软致动器

IF 6.8 Q1 AUTOMATION & CONTROL SYSTEMS Advanced intelligent systems (Weinheim an der Bergstrasse, Germany) Pub Date : 2024-07-08 DOI:10.1002/aisy.202400231
Hongda Lu, Mengqing Zhao, Qingtian Zhang, Jiayi Yang, Zexin Chen, Liping Gong, Xiangbo Zhou, Lei Deng, Haiping Du, Shiwu Zhang, Shi-Yang Tang, Weihua Li
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引用次数: 0

摘要

利用功能性软材料的独特属性产生力和形变,软致动器的重大进展正在推动智能机器人技术的发展。液态金属(LMs)以其高变形性和可调形态而著称,通过可控的表面张力展现出非凡的致动能力。受变色龙捕食方法的启发,这项研究通过调节液态金属的形态,引入了一种生物启发液态金属致动器(BLMA)。这种 BLMA 可通过精确地将 LM 液滴引向电极来实现高应变(高达 170%)致动。我们探讨了影响 BLMA 驱动性能的各种参数。值得注意的是,施加还原电压可诱导过冷 LM 快速凝固,促进室温下的相变。凝固的 LM 可将 BLMA 的保持力提高 1000 倍以上。为了突出 BLMA 的卓越性能,我们介绍了它的各种应用,如复杂的二维平面致动器、步进间隔可调的步进电机、相变控制继电器和激光密码锁致动门电路组。预计 BLMA 的卓越特性将推动软机器人和机电一体化领域的发展。
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Liquid Metal Chameleon Tongues: Modulating Surface Tension and Phase Transition to Enable Bioinspired Soft Actuators

Leveraging the unique attributes of functional soft materials to generate force and deformation, significant advancements in soft actuators are driving the evolution of smart robotics. Liquid metals (LMs), known for their high deformability and tunable morphology, demonstrate remarkable actuating capabilities through controllable surface tension. Inspired by the predation method of chameleons, this work introduces a bioinspired LM actuator (BLMA) by modulating the morphology of LM. This BLMA enables high-strain (up to 170%) actuation by precisely directing LM droplets toward an electrode. Various parameters affecting the BLMA's actuating performance are explored. Notably, the application of a reductive voltage induces rapid solidification of supercooled LM, facilitating phase transition at room temperature. The solidified LM enhances its holding force of BLMA by over 1000 times. To underscore the superior capabilities of the BLMA, diverse applications, such as a complex two-dimensional plane actuator, a stepper motor with adjustable step intervals, a phase transition-controlled relay, and a laser code lock actuation gate set, are presented. It is anticipated that the exceptional characteristics of the BLMA will propel advancements in the realms of soft robotics and mechatronics.

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CiteScore
1.30
自引率
0.00%
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0
审稿时长
4 weeks
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