Pneumatic Regulation of Bi-Directional Fluid Flow in Microchannels

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This paper presents a modeling of airflow inside micro-tunnel for fluid pumping. By utilizing unidirectional air servo system, fluid flow can be regulated within microchannels. The operation of servo system is controlled with multiple nozzles. Pressure variations lead to two fundamental operational modes: “suction” and “exclusion” in channels. Three-dimensional finite volume simulations are tested to demonstrate that operation mechanism for suction is via the generation of a reverse airflow, while exclusion is obtained without the reverse airflow.

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Journal: TechConnect Briefs
Volume: Technical Proceedings of the 2000 International Conference on Modeling and Simulation of Microsystems
Published: March 27, 2000
Pages: 558 - 561
Industry sector: Sensors, MEMS, Electronics
Topics: Micro & Bio Fluidics, Lab-on-Chip, Modeling & Simulation of Microsystems
ISBN: 0-9666135-7-0