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The PDMS micro valve driven by PZT piezoelectric actuator on the silicon wafer

机译:PZT压电执行器在硅片上驱动的PDMS微阀

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摘要

Microfluidic components are basic tools in microanalysis systems. A simple structure PDMS micro valve is described. Driven by the PZT piezoelectric actuator, this microvalve could realize to control the liquid flow rate in the microliter or submilliliter scale. The fabrication method about the PZT piezoelectric thick film with the screening printing technique and the Polydimethylsiloxane (PDMS) valve body with the soft lithography technique are presented. The optimal PZT film processing annealing temperature parameter at 800℃ in 60 min could be observed, the PZT grain size is about 1 μm or more. Then the silicone substrate and the drilled PDMS top substrate are bonded together with the oxygen plasm to form the chamber. The overall dimensions of the valve are 10mm*10mm*2mm. While the dead volume is 0.1 ml, and the inner diameter of the valve seat is 6 mm. Finally, the performance of the PDMS valve is tested.
机译:微流体组件是微分析系统中的基本工具。描述了一种简单结构的PDMS微型阀。该微阀由PZT压电致动器驱动,可实现以微升或亚毫升级控制液体流速。提出了采用丝网印刷技术制备PZT压电厚膜和采用软光刻技术制备聚二甲基硅氧烷(PDMS)阀体的方法。可以观察到最佳的PZT薄膜加工退火温度参数为800℃,60 min,PZT晶粒尺寸约为1μm或更大。然后,将有机硅基板和钻孔的PDMS顶部基板与氧等离子粘合在一起以形成腔室。阀门的整体尺寸为10mm * 10mm * 2mm。死体积为0.1 ml,阀座的内径为6 mm。最后,测试PDMS阀门的性能。

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