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Surface micromachined polymer actuators as valves in PDMS microfluidic system
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, The Institute of Technology.
Linköping University, Department of Physics, Chemistry and Biology, Biosensors and Bioelectronics. Linköping University, The Institute of Technology.ORCID iD: 0000-0002-2071-7768
Linköping University, Department of Physics, Chemistry and Biology, Biomolecular and Organic Electronics. Linköping University, The Institute of Technology.
2000 (English)In: 1st Annual International, Conference On Microtechnologies in Medicine and Biology. 2000, IEEE , 2000, 334-335 p.Conference paper, Published paper (Refereed)
Abstract [en]

To control flows in microfluidic systems there is a need of valves. Desirable properties of such valves are in general low cost, low dead-volume, fast response and low power-consumption. For bioanalytical purposes the requirements also include biocompatibility and ability to function in biological fluids. One way to address these problems is to use surface-fabricated actuators, and then bonding the actuator chip with high aspect-ratio flow-channels in a thick polymer cover. A suitable cover structure can be made in elastomeric poly(dimethylsiloxane) (PDMS) which can be joined to a silicon surface. The active valve structures can be micromuscles, i.e. actuators based on conjugated polymer such as polypyrrole (PPy), which can be electrochemically doped. The reversible doping of PPy forces counterions to flow into or out of the polymer to balance the charge, resulting in a volume change. This volume change can be used in a bilayer actuator, where a metal can serve as constant volume layer as well as electrical contact to the polymer layer changing volume under reversible doping

Place, publisher, year, edition, pages
IEEE , 2000. 334-335 p.
National Category
Engineering and Technology Other Engineering and Technologies
Identifiers
URN: urn:nbn:se:liu:diva-93910DOI: 10.1109/MMB.2000.893799ISBN: 0-7803-6603-4 (print)OAI: oai:DiVA.org:liu-93910DiVA: diva2:627654
Conference
1st Annual Internation IEEE-EMBS Special Topic conference on Microtechnologies in Medicine & Biology, 12-14 October 2000, Lyon, France
Available from: 2013-06-12 Created: 2013-06-12 Last updated: 2015-03-23

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Jager, EdwinInganäs, Olle

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