Growth Characteristic of Microbubble in a Co-flowing Liquid in Microfluidic Chip

2019 5th International Conference on Energy Materials and Environment Engineering

能源学;生态环境科学

Sun, Lixia^1^2 ; Fan, Mingxu^2 ; Xu, Bo^2 ; Yu, Huadong^1 ; Wang, Yue^2 ; Zhang, Yufeng^2 ; Li, Peng^2

College of Mechanical and Electrical Engineering, Changchun University of Science and Technology, Changchun, Jilin

130022, China^1

College of Mechanical Engineering, Beihua University, Jilin, Jilin

132022, China^2

关键词: Co-flowing liquids;    Experimental system;    Generation frequency;    Growth characteristic;    Microbubble growth;    Poly (vinyl alcohol) (PVA);    Polydimethylsiloxane PDMS;    Ratio of length to widths;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/295/3/032007/pdf
DOI  :  10.1088/1755-1315/295/3/032007

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Experiments of microbubble formation in a co-flowing liquid in polydimethylsiloxane (PDMS) microfluidic chip were developed. The experimental system was set up to investigate the effects of liquid flow rate, gas pressure, gas channel width and concentration of polyvinyl alcohol (PVA) solution on microbubble growth process. Three stages of the bubble growth process were first obtained through experiments. The control variable method was used to explore the growth characteristics of bubbles, such as the volume change rate, the contact angle, the ratio of length to width, and the centroid displacement. This study provides an empirical reference for the growth process of microbubbles in microfluidic chips, which helps to achieve precise control of microbubble volume and generation frequency.