Journal Article

FZJ-2019-04831

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Quartz Whispering-Gallery-Mode Resonator With Microfluidic Chip as Sensor for Permittivity Measurement of Liquids

Gubin, A. I. ; Protsenko, I. A. ; Barannik, A. A. ; Vitusevich, S. (Corresponding author)FZJ* ; Lavrinovich, A. A. ; Cherpak, N. T.

2019
IEEE New York, NY

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Please use a persistent id in citations: doi:10.1109/JSEN.2019.2920345

Abstract: Studies of biological solutions require high measurement accuracy, the ability to detect low changes in substance concentration, and small amounts of the liquid under test. A microwave complex permittivity measurement technique based on a high-quality-factor whispering-gallery-mode resonator with a microfluidic chip allows small amounts of dielectric liquids to be investigated with high accuracy. An existing technique based on a sapphire resonator does not provide for a low-concentration detection limit for substances with low molecular weight. Here, we present an advanced technique based on a quartz dielectric resonator. The detection limit obtained for glucose in water solution was found to be about one order of magnitude lower for the quartz resonator cell than for the sapphire-resonator-based measurement cell. The limit is about or lower than the concentration of glucose in human blood. This fact means that the technique can be used as the sensor for investigations of biological solutions in the microwave range. A study of glucose, lactalbumin, and bovine serum albumin was successfully performed in the Ka -band using the developed sensor.

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Contributing Institute(s):

1. Bioelektronik (ICS-8)

Research Program(s):

1. 523 - Controlling Configuration-Based Phenomena (POF3-523) (POF3-523)

Appears in the scientific report 2020

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Database coverage:
; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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