Broadband Electrical Determination of Liquid Mixing Ration for Microfluidics

Paweł Barmuta , Juncheng Bao , Meng Zhang , Tomislav Markovic , Bart Nauwelaers , Dominique Schreurs , Ilja Ocket


The 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 categoriesElectronic article/chapter
Author Paweł Barmuta (FEIT / PE)
Paweł Barmuta,,
- The Institute of Electronic Systems
, Juncheng Bao
Juncheng Bao,,
, Meng Zhang
Meng Zhang,,
, Tomislav Markovic
Tomislav Markovic,,
, Bart Nauwelaers
Bart Nauwelaers,,
, Dominique Schreurs
Dominique Schreurs,,
, Ilja Ocket
Ilja Ocket,,
Publication size in sheets0.5
Book 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 Englishdielectric spectroscopy; microfluidics; mixing ratio
Languageen angielski
Score (nominal)20
Score sourcepublisherList
ScoreMinisterial score = 20.0, 30-06-2020, ChapterFromConference
Citation count*
Share Share

Get link to the record

* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
Are you sure?