伪装
执行机构
稳健性(进化)
仿生学
机器人
计算机科学
纳米技术
材料科学
自愈水凝胶
人工智能
化学
生物化学
基因
高分子化学
作者
Hyunwoo Yuk,Shaoting Lin,Chu Ma,Mahdi Takaffoli,Nicholas X. Fang,Xuanhe Zhao
摘要
Abstract Sea animals such as leptocephali develop tissues and organs composed of active transparent hydrogels to achieve agile motions and natural camouflage in water. Hydrogel-based actuators that can imitate the capabilities of leptocephali will enable new applications in diverse fields. However, existing hydrogel actuators, mostly osmotic-driven, are intrinsically low-speed and/or low-force; and their camouflage capabilities have not been explored. Here we show that hydraulic actuations of hydrogels with designed structures and properties can give soft actuators and robots that are high-speed, high-force, and optically and sonically camouflaged in water. The hydrogel actuators and robots can maintain their robustness and functionality over multiple cycles of actuations, owing to the anti-fatigue property of the hydrogel under moderate stresses. We further demonstrate that the agile and transparent hydrogel actuators and robots perform extraordinary functions including swimming, kicking rubber-balls and even catching a live fish in water.
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