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Is the circular motion of bubble-driven spherical Janus micromotors deterministic or random?

文献类型：期刊论文

作者Wang LL(王雷磊)5; Li HY(李航宇)4,5; Liu, Zhe3; Li CL(李辰璐)3; Zhang, Jing2; Chen, Li3; Wang, Xinwei1; Guan DS(关东石)4,5; Zheng X(郑旭)5; Cui, Haihang3
刊名PHYSICS OF FLUIDS
出版日期2025-06-01
卷号37期号:6页码:10
ISSN号1070-6631
DOI10.1063/5.0274292
通讯作者Zheng, Xu(zhengxu@lnm.imech.ac.cn) ; Cui, Haihang(cuihaihang@xauat.edu.cn)
英文摘要The emerging application of a microbubble-driven micromotor encounters such a dilemma: persistence of long-distance transport is strongly desired, whereas the bubble micromotor usually manifests circular or spiral motions, which are supposed to be random owing to Brownian dynamics at the microscale. However, this assumption based on the model of active Brownian motion is debatable for bubble micromotors, and what mechanism could lead to deterministic motion of the bubble micromotor is still unclear. In this work, we show a counterintuitive phenomenon that a smaller bubble-driven Janus micromotor is more likely to manifest a straight trajectory than a larger one. Our model explains that the microbubble position determines the shape of the trajectory as the bubble introduces a propulsion force and a rotational torque to drive the motion of the micromotor. We perform numerical simulation to reveal how interfacial hydrodynamics coupled with surface chemical reaction determines the bubble nucleation position. Surprisingly, the result of predictable bubble position indicates a deterministic mechanism for the circular motion of a bubble-driven Janus micromotor, which shows good agreement with our experimental observation. Our findings provide valuable insight for developing manipulation strategies for bubble-driven micromotors/microrobots based on controllable deterministic mechanisms.
分类号一类/力学重要期刊
资助项目National Key Research and Development Program of China10.13039/501100012166[2022YFF0503504] ; National Key R&D Program of China[XDB0620102] ; National Key R&D Program of China[XDA0470203] ; Strategic Priority Research Program of Chinese Academy of Sciences[12302357] ; Strategic Priority Research Program of Chinese Academy of Sciences[12472273] ; National Natural Science Foundation of China[2021ZDLSF05-04] ; Key Research and Development Program of Shaanxi Province[2024151] ; Zhongke Technology Achievement Transfer and Transformation Centre of Henan Province
WOS研究方向Mechanics ; Physics
语种英语
WOS记录号WOS:001520649700008
资助机构National Key Research and Development Program of China10.13039/501100012166 ; National Key R&D Program of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; Key Research and Development Program of Shaanxi Province ; Zhongke Technology Achievement Transfer and Transformation Centre of Henan Province
其他责任者郑旭，Cui, Haihang
源URL[http://dspace.imech.ac.cn/handle/311007/101880]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Northwestern Polytech Univ, Queen Mary Univ London Engn Sch, Xian 710072, Peoples R China
2.Jiangsu Vocat Inst Architectural Technol, Sch Architectural Intelligence, Xuzhou 221116, Peoples R China;
3.Xian Univ Architecture & Technol, Sch Bldg Serv Sci & Engn, Xian 710055, Peoples R China;
4.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China;
5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing Key Lab Engn Construct & Mechanobiol, Beijing 100190, Peoples R China;
推荐引用方式
GB/T 7714		 Wang LL,Li HY,Liu, Zhe,et al. Is the circular motion of bubble-driven spherical Janus micromotors deterministic or random?[J]. PHYSICS OF FLUIDS,2025,37(6):10.
APA 王雷磊.,李航宇.,Liu, Zhe.,李辰璐.,Zhang, Jing.,...&Cui, Haihang.(2025).Is the circular motion of bubble-driven spherical Janus micromotors deterministic or random?.PHYSICS OF FLUIDS,37(6),10.
MLA 王雷磊,et al."Is the circular motion of bubble-driven spherical Janus micromotors deterministic or random?".PHYSICS OF FLUIDS 37.6(2025):10.

入库方式： OAI收割

来源：力学研究所

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