Laser & Optoelectronics Progress, Volume. 62, Issue 9, 0914002(2025)
Laser Fabrication of Dual-Circular Track Microchannel and Its Application in Gas Transport
Manipulating droplets composed of nonpolar solvents or bubbles in aqueous media is crucial in materials science and industrial production. In this study, a dual-circular track microdevice is prepared on an aluminum substrate surface using a nanosecond laser as a gas storage system. When the bubbles are injected onto the smaller circular, they diffuse toward the boundaries until a Laplace pressure is generated. The generated Laplace pressure, as the main driving force, can transport the bubbles along the trajectory toward the opposite circular point, thereby achieving a stable state when the bubbles from both circles match. Additionally, the effects of various parameters of the dual-circular track on the efficiency of bubble transportation are investigated. By altering the track width and length, as well as the diameter of two circles, fixed and unidirectional transportations of bubbles can be achieved. Based on the characteristics of the dual-circular track microdevice, complex bubble transportation trajectories are designed. These trajectories significantly benefit microfluidic manipulation, such as drug delivery, gas catalysis, and bubble accumulation.
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Sizhu Wu, Xueli Gao, Jiawei Lu, Lu Zeng, Kelin Xie, Jianquan Li, Yifan Liu, Chao Chen, Yi Xiao, Zhixiang Gu. Laser Fabrication of Dual-Circular Track Microchannel and Its Application in Gas Transport[J]. Laser & Optoelectronics Progress, 2025, 62(9): 0914002
Category: Lasers and Laser Optics
Received: Jul. 18, 2024
Accepted: Sep. 12, 2024
Published Online: Apr. 18, 2025
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CSTR:32186.14.LOP241715