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Sensors 2010, 10(6), 5346-5358; doi:10.3390/s100605346

A Low Frequency Electromagnetic Sensor for Indirect Measurement of Glucose Concentration: In Vitro Experiments in Different Conductive Solutions

1
ISIB-CNR, Corso Stati Uniti 4, 35127 Padua, Italy
2
Bellco S.r.l., Via Camurana 1, 41037, Mirandola (MO), Italy
*
Author to whom correspondence should be addressed.
Received: 7 January 2010 / Revised: 4 March 2010 / Accepted: 12 May 2010 / Published: 28 May 2010
(This article belongs to the Special Issue Glucose Sensors)
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Abstract

In recent years there has been considerable interest in the study of glucose-induced dielectric property variations of human tissues as a possible approach for non-invasive glycaemia monitoring. We have developed an electromagnetic sensor, and we tested in vitro its ability to estimate variations in glucose concentration of different solutions with similarities to blood (sodium chloride and Ringer-lactate solutions), differing though in the lack of any cellular components. The sensor was able to detect the effect of glucose variations over a wide range of concentrations (~78–5,000 mg/dL), with a sensitivity of ~0.22 mV/(mg/dL). Our proposed system may thus be useful in a new approach for non-invasive and non-contact glucose monitoring. View Full-Text
Keywords: dielectric properties; conductivity; sodium-chloride solution; Ringer-lactate solution; non-invasive glucose monitoring; non-contact sensor dielectric properties; conductivity; sodium-chloride solution; Ringer-lactate solution; non-invasive glucose monitoring; non-contact sensor
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Tura, A.; Sbrignadello, S.; Cianciavicchia, D.; Pacini, G.; Ravazzani, P. A Low Frequency Electromagnetic Sensor for Indirect Measurement of Glucose Concentration: In Vitro Experiments in Different Conductive Solutions. Sensors 2010, 10, 5346-5358.

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