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Issue 97, 2016
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Breathing to harvest energy as a mechanism towards making a liquid metal beating heart

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Abstract

Simulating nature to manufacture a self-powered device or motor has been an important goal in science and engineering. Conventional spontaneous motion has generally been achieved through the Marangoni flow of an organic liquid or water solution. Moreover, as a metallic material mercury has been developed as a beating heart, a kind of self-propulsion example. However, serious safety concerns about mercury restrict its extensive application. This study discovered an important mechanism to realize a GaIn alloy-based liquid metal beating heart by introducing a breathing mechanism in simulating living organisms. With the unique configuration of a semi-submerged liquid metal droplet partially immersed in alkaline solution, such a system produces a surface tension gradient perpendicular to the three-phase contact line which subsequently leads to the oscillation of the droplet and the surrounding solution. This finding suggests a feasible way to fabricate self-oscillating liquid metal motors without input of external electricity or fuels.

Graphical abstract: Breathing to harvest energy as a mechanism towards making a liquid metal beating heart

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Article information


Submitted
08 Jul 2016
Accepted
25 Sep 2016
First published
26 Sep 2016

RSC Adv., 2016,6, 94692-94698
Article type
Paper

Breathing to harvest energy as a mechanism towards making a liquid metal beating heart

L. Yi, Y. Ding, B. Yuan, L. Wang, L. Tian, C. Chen, F. Liu, J. Lu, S. Song and J. Liu, RSC Adv., 2016, 6, 94692
DOI: 10.1039/C6RA17486H

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