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

Micromachines

Masahiro Takinoue¹  Masayuki Hayakawa¹  Hiroaki Onoe²  Ken H. Nagai³ 

[1] Department of Computational Intelligence and Systems Science, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8502, Japan;Department of Mechanical Engineering, Keio University, Yokohama, Kanagawa 223-8522, Japan;School of Materials Science, Japan Advanced Institute of Science and Technology, Nomi, Ishikawa 923-1292, Japan;

关键词: self-propelled micromotors;    bubble propulsion;    complex-shaped multi-compartmental microparticles;    complex-shaped multi-compartmental microgels;    active matter;   

DOI  :  10.3390/mi7120229

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown