流体机械2012，Vol.40Issue(12)：47-50,38,5.DOI:10.3969/j.issn.1005-0329.2012.12.011
一种负压驱动的蠕动微型泵设计
Design of a Peristaltic Micropump Driven by Pneumatic Pressure
摘要
Abstract
As an indispensable element in integrated microfluidics, micropumps have gradually evolved over the past two decades. Based on vacuum-driven principle, a simple peristaltic micropump is developed. The micropump fabricated by laser mi-cromachining and plasma bonding of three polydimethylsiloxane (PDMS) layers, includes a pneumatic channel layer, actuation membrane layer, and microfluidic channel layer. As the key to peristaltic motion, the sequential deflection of the elastic membranes is achieved by periodic pressure waveforms ( negative) traveling through the pneumatic channel, provided by a vacuum source regulated by an electromagnetic valve ( EMV). This configuration eliminates the complicated control logic typically required in peristaltic motion. Experiment results show that a maximal flow rate of 170 μL min-1 has been optimized at the pulsed vacuum frequency of 30 Hz with a vacuum pressure of 50 kPa.关键词
微型泵/微流体/负压驱动/蠕动Key words
micropump /microfluid/ vacuum driven/ peristaltic分类
机械制造引用本文复制引用
崔建国,王洪..一种负压驱动的蠕动微型泵设计[J].流体机械,2012,40(12):47-50,38,5.基金项目
重庆市自然科学基金项目(cstc2011jjA10018) （cstc2011jjA10018）
