Electrochemical Control of the Surface Energy of Conjugated Polymers for Guiding Samples in Microfluidic Systems
2009 (English)In: IUTAM SYMPOSIUM ON ADVANCES IN MICRO- AND NANOFLUIDICS, Vol. 15, 113-125 p.Article in journal (Refereed) Published
In the literature there are several methods for electronically guiding aqueous samples through capillary systems such as electrowetting or using various sorts of mechanical valves. Electrowetting typically requires rather large voltages to be applied to the sample itself, which can cause unwanted reactions in the sample. In the current paper the pre-programming the surface energy of a conjugated polymer is presented as a method to eliminate this risk. We found also that mechanical valves, such as pneumatic, magnetic, or based on electroactive polymers are all considerably more difficult to manufacture than the devices presented in this work. Our experiments show that electrochemically modifying the redox state of several conjugated polymers can be used to control the surface energy of the polymers surface. The materials involved lend themselves to low-cost manufacturing, making disposable devices for applications such as in-home medical diagnostics plausible.
Place, publisher, year, edition, pages
2009. Vol. 15, 113-125 p.
IdentifiersURN: urn:nbn:se:liu:diva-51782DOI: 10.1007/978-90-481-2626-2_9OAI: oai:DiVA.org:liu-51782DiVA: diva2:277387