Authors: Y-M. Wan, N-K. Yao, C. Chen, L-Y. Hung and S-H. Wang
Affilation: ITRI, Taiwan
Pages: 558 - 561
Keywords: pneumatic control, single direction airflow, two-way fluid flow, biochip
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.