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Novel substrate integrated waveguide architectures for microfluidic biosensing and environmental detection

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Benleulmi, A., Boubekeur, N. et Massicotte, D. (2020, May 25-28). Novel substrate integrated waveguide architectures for microfluidic biosensing and environmental detection. Dans 2020 IEEE International Instrumentation and Measurement Technology Conference (I2MTC), Dubrovnik, Croatia.

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Résumé

This paper presents two novel substrate integrated waveguide (SIW) sensing-elements for microfluidic biosensing and environmental detection. The first proposed structure is a SIW interferometer for biological liquids characterization. The operation principle of the latter is based on the variation of the effective dielectric constant of a sensitive branch due to the introduction of aqueous solutions into a sensitive region of a total volume of ~1 µL. To achieve a destructive interference, the signal division and combination have been carried out using microstrip Wilkinson power dividers. The sensitive characteristics of the device have been tested by measuring two buffer solutions; Phosphate-buffered saline (PBS) and Roswell Park Memorial Institute medium (RPMI). In regards to the second proposed device, it consists of an H-plane SIW-based horn antenna demonstrated for relative humidity (RH) sensing. The sensitive characteristics of the proposed antenna without the use of a sensitive layer were tested in the range of 25%–75% RH. The combination of antenna and sensor functions in a single substrate integrated device offers multiple advantages and enables the development of simple, compact and cost-effective sensors. Passive RFID sensing is also possible with this technique without resorting to the use of additional sensors.

Type de document: Document issu d'une conférence ou d'un atelier
Mots-clés libres: Interferometer Horn antenna Sensor Biological liquids Humidity Substrate Integrated Waveguide (SIW)
Date de dépôt: 09 mai 2022 18:22
Dernière modification: 09 mai 2022 18:22
URI: https://depot-e.uqtr.ca/id/eprint/10135

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