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Erratum published on 20 February 2017, see Micromachines 2017, 8(2), 61.

Open AccessArticle
Micromachines 2016, 7(12), 229; doi:10.3390/mi7120229

Influence of Asymmetry and Driving Forces on the Propulsion of Bubble-Propelled Catalytic Micromotors

1
Department of Computational Intelligence and Systems Science, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8502, Japan
2
Department of Mechanical Engineering, Keio University, Yokohama, Kanagawa 223-8522, Japan
3
School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa 923-1292, Japan
4
Department of Computer Science, School of Computing, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8502, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Hongrui Jiang
Received: 11 October 2016 / Revised: 2 December 2016 / Accepted: 7 December 2016 / Published: 14 December 2016
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Abstract

Bubble-propelled catalytic micromotors have recently been attracting much attention. A bubble-propulsion mechanism has the advantage of producing a stronger force and higher speed than other mechanisms for catalytic micromotors, but the nature of the fluctuated bubble generation process affects the motions of the micromotors, making it difficult to control their motions. Thus, understanding of the influence of fluctuating bubble propulsion on the motions of catalytic micromotors is important in exploiting the advantages of bubble-propelled micromotors. Here, we report experimental demonstrations of the bubble-propelled motions of propeller-shaped micromotors and numerical analyses of the influence of fluctuating bubble propulsion on the motions of propeller-shaped micromotors. We found that motions such as trochoid-like motion and circular motion emerged depending on the magnitude or symmetricity of fluctuations in the bubble-propulsion process. We hope that those results will help in the construction and application of sophisticated bubble-propelled micromotors in the future. View Full-Text
Keywords: self-propelled micromotors; bubble propulsion; complex-shaped multi-compartmental microparticles; complex-shaped multi-compartmental microgels; active matter self-propelled micromotors; bubble propulsion; complex-shaped multi-compartmental microparticles; complex-shaped multi-compartmental microgels; active matter
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Hayakawa, M.; Onoe, H.; Nagai, K.H.; Takinoue, M. Influence of Asymmetry and Driving Forces on the Propulsion of Bubble-Propelled Catalytic Micromotors. Micromachines 2016, 7, 229.

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