A vapor based microfluidic flow regulator

SENSORS AND ACTUATORS B-CHEMICAL

卷:142

Article

Xu, Wei^1,3  Wu, Liang L.¹  Zhang, Yang¹  Xue, Hong²  Li, Guann-Pyng¹  Bachman, Mark¹ 

[1] Univ Calif Irvine, Dept Elect Engn & Comp Sci, Irvine, CA 92697 USA

[2] Calif State Polytech Univ Pomona, Dept Mech Engn, Pomona, CA 91768 USA

[3] Univ N Carolina, Dept Chem, Chapel Hill, NC 27599 USA

关键词: Microflow regulator;    Microfluidics;    Microvalve;    Hydrophobic;    Polymer PDMS;    Lab-on-Chip;    Concentration gradient;   

DOI  :  10.1016/j.snb.2009.08.007

来源: Elsevier

【 摘 要 】

We introduce a flow regulating technology that uses trapped air bubbles in a hydrophobic microfluidic channel. We present basic designs for flow regulators and flow valves using trapped air. Experiments have successfully demonstrated the capability of this technique for delivering constant and varying flow rate, and for on-off valving. This approach to valving provides a simple, yet effective way to monolithically integrate flow and valve control on polymer Lab-on-Chip devices. (C) 2009 Elsevier B. V. All rights reserved.

【 授权许可】

Free