Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/93880
Title: Micro check valves for integration into polymeric microfluidic devices
Authors: Wong, Kok-Keong
Ho, Soon-Seng
Low, Cassandra Lee-Ngo
Nguyen, Nam-Trung
Truong, Thai-Quang
Keywords: DRNTU::Engineering::Mechanical engineering
Issue Date: 2004
Source: Nguyen, N. T., Truong, T. Q., Wong, K. K., Ho, S. S., & Low, C. L. N. (2004). Micro check valves for integration into polymeric microfluidic devices. Journal of Micromechanics and Microengineering, 14(1), 69–75.
Series/Report no.: Journal of micromechanics and microengineering
Abstract: In this paper we describe the design, simulation, fabrication and characterization of micro check valves suitable for integration into polymeric microfluidic devices such as micropumps or test cartridges for biomedical analysis. The valves are fabricated by a polymeric surface micromachining process, which utilizes SU-8 as the functional material. The devices are assembled with the lamination technique. A micro check valve consists of three layers: an inlet layer, a valve layer and an outlet layer. The valve is a disc with a diameter of 1 mm. The disc is suspended on folded beams, which act as valve springs. Both valve disc and springs are fabricated in a 100 µm SU-8 layer. The valves prove a clear flow rectification function. Relatively low pressure is required for opening the valve. The valves were tested and characterized with water. One of the valves is successfully integrated into a polymeric micropump. These valves prove the facile and reliable lamination technology for the fabrication of complex polymeric microfluidic devices for biomedical analysis.
URI: https://hdl.handle.net/10356/93880
http://hdl.handle.net/10220/7864
DOI: http://dx.doi.org.ezlibproxy1.ntu.edu.sg/10.1088/0960-1317/14/1/309
Rights: © 2004 IOP Publishing Ltd. This is the author created version of a work that has been peer reviewed and accepted for publication by Journal of Micromechanics and Microengineering, IOP Publishing Ltd. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org.ezlibproxy1.ntu.edu.sg/10.1088/0960-1317/14/1/309].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles

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