Broadband Electrical Determination of Liquid Mixing Ration for Microfluidics
Paweł Barmuta , Juncheng Bao , Meng Zhang , Tomislav Markovic , Bart Nauwelaers , Dominique Schreurs , Ilja Ocket
AbstractThe paper shows a microwave method to determine mixing ratio of fluids in a microfluidic channel. The method uses modified Bruggeman formula that is fitted over a broad range of frequencies. The extraction of mixing ratio is based solely on the measurement results without any reference to EM simulation, which alleviates the requirements for chip fabrication accuracy. The procedure was tested with three lengths of microfluidic channels over CPW lines, and the mixing error was determined to be less than 5% error for at least 1.5 GHz frequency range. For some frequencies the maximum error drops to below 3%.
|Publication size in sheets||0.5|
Vrba Jan, Svanda Milan, Fiser Ondrej, Vrba David (eds.): Proceedings of the European Microwave Conference in Central Europe 2019 (EuMCE2019), 2019, Institute of Electrical and Electronics Engineers, ISBN 978-2-87487-067-5, 652 p.
08874833.pdf / 59.52 KB / No licence information
|Keywords in English||dielectric spectroscopy; microfluidics; mixing ratio|
|Score||= 20.0, 30-06-2020, ChapterFromConference|
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