HIGH PRESSURE ON-CHIP VALVES FOR THERMOPLASTIC MICROFLUIDICS

被引：0

作者：

Chen, Chien-Fu ^{[1
]}

Liu, Jikun ^{[1
]}

Chang, Chien-Cheng

DeVoe, Don L. ^{[1
]}

机构：

[1] Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA

来源：

IMECE 2009: PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, VOL 12, PTS A AND B | 2010年

关键词：

SOFT LITHOGRAPHY; SCREW;

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A high-pressure microvalve technology based on the integration of discrete elastomeric elements into rigid thermoplastic chips is described. The low-dead-volume valves employ deformable polydimethylsiloxane (PDMS) plugs actuated using a threaded stainless steel needle, allowing exceptionally high pressure resistance to be achieved. The simple fabrication process is made possible through the use of poly(ethylene glycol) (PEG) as a removable blocking material to avoid contamination of PDMS within the flow channel while yielding a smooth contact surface with the PDMS valve surface. Burst pressure tests reveal that the valves can withstand over 24MPa without leakage.

引用

页码：471 / 474

页数：4

共 8 条

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