气泡驱动微马达形状与气泡位置影响其运动特性的数值模拟

doi:10.11896/cldb.25020188

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Abstract This study utilizes numerical simulations to methodically examine the motion mechanism of bubble-driven micromotors, with a particular emphasis on the coupled influence of micromotor geometry and the position of bubble generation on propulsion characteristics. The results indicate a pronounced asymmetry in the contribution of bubble dynamics to micromotor displacement, where the collapse phase generates significantly greater propulsion than the growth phase. A synergistic effect is observed between micromotor shape and bubble generation location: when bubbles form on convex surfaces, the motion displacements of micromotors with different geometries exhibit similarities. However, when generated on concave surfaces, crescent-shaped micromotors exhibit minimal displacement, while spherical micromotors achieve the highest displacement. A parametric optimization analysis reveals that reducing the micromotor size, increasing the maximum bubble diameter, or accelerating the bubble collapse rate can enhance displacement by up to tenfold. This work elucidates the intrinsic relationship among geometric structure, bubble dynamics, and motion performance, providing a theoretical foundation for the optimized design of micromotors tailored to specific applications.

Key words： micromotor shape bubble generation position motion behavior

Published: Online: 2026-04-16

CLC number:

TH138.51

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	Articles by authors
	CHEN Gang
	ZHANG Bingyang
	WANG Zhibin
	LIU Yunlong
	ZHANG Fangfang

Cite this article:

CHEN Gang,ZHANG Bingyang,WANG Zhibin, et al. Numerical Simulation Study on the Influence of Bubble-driven Micromotor Shape and Bubble Generation Position on Its Motion Behavior[J]. Materials Reports, 2026, 40(7): 25020188-7.

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https://www.mater-rep.com/EN/10.11896/cldb.25020188 OR https://www.mater-rep.com/EN/Y2026/V40/I7/25020188

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