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Automatic Morphology Control of Liquid Metal using a Combined Electrochemical and Feedback Control Approach

1
School of Engineering, Macquarie University, Sydney, NSW 2122, Australia
2
School of Mechanical, Materials, Mechatronic and Biomedical Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
*
Authors to whom correspondence should be addressed.
Micromachines 2019, 10(3), 209; https://doi.org/10.3390/mi10030209
Received: 4 March 2019 / Revised: 17 March 2019 / Accepted: 25 March 2019 / Published: 26 March 2019
(This article belongs to the Section D:Materials and Processing)
Gallium-based liquid metal alloys have been attracting attention from both industry and academia as soft, deformable, reconfigurable and multifunctional materials in microfluidic, electronic and electromagnetic devices. Although various technologies have been explored to control the morphology of liquid metals, there is still a lack of methods that can achieve precise morphological control over a free-standing liquid metal droplet without the use of mechanical confinement. Electrochemical manipulation can be relatively easy to apply to liquid metals, but there is a need for techniques that can enable automatic and precise control. Here, we investigate the use of an electrochemical technique combined with a feedback control system to automatically and precisely control the morphology of a free-standing liquid metal droplet in a sodium hydroxide solution. We establish a proof-of-concept platform controlled by a microcontroller to demonstrate the reconfiguration of a liquid metal droplet to desired patterns. We expect that this method will be further developed to realize future reconfigurable liquid metal-enabled soft robots. View Full-Text
Keywords: liquid metal; morphology control; electrochemistry; feedback control system liquid metal; morphology control; electrochemistry; feedback control system
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MDPI and ACS Style

Li, M.; Mohamed Cassim Mohamed Anver, H.; Zhang, Y.; Tang, S.-Y.; Li, W. Automatic Morphology Control of Liquid Metal using a Combined Electrochemical and Feedback Control Approach. Micromachines 2019, 10, 209. https://doi.org/10.3390/mi10030209

AMA Style

Li M, Mohamed Cassim Mohamed Anver H, Zhang Y, Tang S-Y, Li W. Automatic Morphology Control of Liquid Metal using a Combined Electrochemical and Feedback Control Approach. Micromachines. 2019; 10(3):209. https://doi.org/10.3390/mi10030209

Chicago/Turabian Style

Li, Ming, Hisham Mohamed Cassim Mohamed Anver, Yuxin Zhang, Shi-Yang Tang, and Weihua Li. 2019. "Automatic Morphology Control of Liquid Metal using a Combined Electrochemical and Feedback Control Approach" Micromachines 10, no. 3: 209. https://doi.org/10.3390/mi10030209

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