空化发射

IF 45.8 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-08-28 DOI:10.1126/science.adu8943

Dalei Wang, Zixiao Liu, Hongping Zhao, Huanqi Qin, Gongxun Bai, Chi Chen, Pengju Shi, Yingjie Du, Yusen Zhao, Wei Liu, Dan Wang, Guoquan Zhou, Ximin He, Chaoqing Dai

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引用次数: 0

摘要

空化的特点是在液体的低压或高温区域形成蒸汽泡，通常是破坏性的，但它可以用于执行器和机器人。我们利用空化现象在过热液体中积累大量能量，抑制其立即释放，直到达到稳定极限。这些充满能量的、不稳定的气泡猛烈地破裂，产生一股强大的能量和力量，引发运动。值得注意的是，通过空化发射的毫米级装置可以跳到1.5米的高度，达到每秒12米（m/s）的峰值速度，7.14 × 104米/s2的加速度和0.64%的能源效率，并且还可以以每秒12厘米的速度在水中游泳。基于空泡的发射适用于各种设备材料、液体介质、刺激和操作环境。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Launching by cavitation

Cavitation, characterized by formation of vapor bubbles in a low-pressure or high-temperature region of a liquid, is often destructive, but it can be harnessed for actuators and robots. We exploit cavitation to accumulate substantial energy in superheated liquids by suppressing its immediate release until reaching a stability limit. The energetic, unstable bubbles collapse violently, producing a burst of high power and force that initiates motion. Notably, a millimeter-scale device launched by cavitation can jump to a height of 1.5 meters—reaching a 12 meters per second (m/s) peak velocity, a 7.14 × 10⁴ m/s² acceleration, and a 0.64% energy efficiency—and can also swim on water at 12 centimeters per second. Cavitation-based launching works with a broad range of device materials, liquid media, stimuli, and operational environments.

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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