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Microwave-Based Microfluidic Sensor for Non-Destructive and Quantitative Glucose Monitoring in Aqueous Solution

Thomas Chretiennot 1 David Dubuc 1 Katia Grenier 1
1 LAAS-MH2F - Équipe Micro et nanosystèmes HyperFréquences Fluidiques
LAAS - Laboratoire d'analyse et d'architecture des systèmes
Abstract : This paper presents a reliable microwave and microfluidic miniature sensor dedicated to the measurement of glucose concentration in aqueous solution. The device; which is integrated with microtechnologies; is made of a bandstop filter implemented in a thin film microstrip technology combined with a fluidic microchannel. Glucose aqueous solutions have been characterized for concentration ranging from 80 g/L down to 0.3 g/L and are identified with the normalized insertion loss at optimal frequency. The sensitivity of the sensor has consequently been estimated at 7.6 × 10 −3 dB/(g/L); together with the experimental uncertainty; the resolution of the sensor comes to 0.4 g/L. These results demonstrate the potentialities of such a sensor for the quantitative analysis of glucose in aqueous solution.
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Thomas Chretiennot, David Dubuc, Katia Grenier. Microwave-Based Microfluidic Sensor for Non-Destructive and Quantitative Glucose Monitoring in Aqueous Solution. Sensors, MDPI, 2016, 16 (10), pp.1733. ⟨10.3390/s16101733⟩. ⟨hal-01463941⟩

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