Microwave dielectric resonator biosensor for aqueous glucose solution

We report a near-field microwave biosensor based on a dielectric resonator to detect glucose concentration. A microwave biosensor with a high Q dielectric resonator allows observation of the small variation of the glucose concentration by measuring the shift of the resonance frequency and the microw...

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Bibliographic Details
Published inReview of scientific instruments Vol. 79; no. 8; p. 086107
Main Authors Kim, Jongchul, Babajanyan, Arsen, Hovsepyan, Artur, Lee, Kiejin, Friedman, Barry
Format Journal Article
LanguageEnglish
Published United States 01.08.2008
Subjects
Biosensing Techniques - instrumentation
Equipment Design
Glucose - chemistry
Microwaves
Pharmaceutical Solutions - analysis
Pharmaceutical Solutions - chemistry
Water - chemistry
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Summary:We report a near-field microwave biosensor based on a dielectric resonator to detect glucose concentration. A microwave biosensor with a high Q dielectric resonator allows observation of the small variation of the glucose concentration by measuring the shift of the resonance frequency and the microwave reflection coefficient S(11). We observed the concentration of glucose with a detectable resolution up to 5 mgml at an operating frequency of about f=1.68 GHz. The change in the glucose concentration is directly related to the change in the reflection coefficient due to the electromagnetic interaction between the dielectric resonator and the glucose solution.
ISSN:1089-7623
DOI:10.1063/1.2968115