Microfluidic devices and Gigahertz sensor applied to measurements of liquid mixtures concentration

Salomao Moraes Da Silva, Johan Stiens, J.W. Swart, Stanislav Moshkalev, Yuchen Zhang, Vladimir Matvejev, Werner Vandermeiren, Cathleen De Tandt

Research output: Chapter in Book/Report/Conference proceedingMeeting abstract (Book)

Abstract

This paper reports on the performance of a sub-THz liquid sensor tool coupled to a microfluidic platform. Non-invasive, non-destructive and on-line measurements are demonstrated for the determination of ethanol concentration and for controlling bymicromixer device. We have developed a label-free chemical sensing methodology coupling a sub-terahertz sensor technology in microfluidic devices fabricated on glass and polydimethylsiloxane. The concept of sensor in micromixer applications operating at 60 GHz for known ethanol concentration ranging 0% to 100%, with a corresponding dynamic range of 2.79dB. The sensor allowed establishing the correlation between the mass flow rate and the ethanol concentration in the microfluidic system, where two-stream lines form the mixture in laminar flows, with Reynolds number < 13.54 and Peclet number > 25700. We demonstrated on-line sensing and linear control of ethanol concentration on demand with a small variation of 0.32% (v/v) between measured and required ethanol concentration.

Original languageEnglish
Title of host publicationSBMicro 2017 - 32nd Symposium on Microelectronics Technology and Devices
Subtitle of host publicationChip on the Sands, co-located Symposia: 30th SBCCI - Circuits and Systems Design, 2nd INSCIT - Electronic Instrumentation, 7th WCAS - IC Design Cases and 17th SForum - Undergraduate-Student Forum
ISBN (Electronic)9781538628775
DOIs
Publication statusPublished - 15 Nov 2017
Event32nd Symposium on Microelectronics Technology and Devices (SBMicro Chip on the sands 2017) - Fortaleza, Ceará, Brazil
Duration: 28 Aug 20171 Sep 2017
http://chiponthesands.lesc.ufc.br/sbmicro-2017/home

Conference

Conference32nd Symposium on Microelectronics Technology and Devices (SBMicro Chip on the sands 2017)
CountryBrazil
CityFortaleza, Ceará
Period28/08/171/09/17
Internet address

Keywords

  • Ethanol concentration
  • Laminar flow
  • Linear control of ethanol concentration
  • Microfluidic device
  • Passive Micromixer
  • THz sensor

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