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Real-time measurements of size, speed, and dielectric property of liquid segments using a microwave microfluidic sensor

Abduljabar, Ali, Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 and Barrow, David ORCID: https://orcid.org/0000-0003-2096-7262 2014. Real-time measurements of size, speed, and dielectric property of liquid segments using a microwave microfluidic sensor. Presented at: 2014 IEEE MTT-S International Microwave Symposium (IMS2014), Tampa, FL, USA, 1-6 June 2014. 2014 IEEE MTT-S International Microwave Symposium (IMS2014). 2014 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS). IEEE, pp. 1-4.

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Abstract

This paper describes the use of microfluidic microwave sensors for measuring the length, volume, speed and dielectric properties of different liquids in a segmented flow. The sensor is a variant of the split ring resonator, operating around 4 GHz, realized in a microstrip implementation. Changes of the resonant frequency and quality factor are performed when a segment enters the sensing region, in this case the gap regions. Two different geometries of resonators were used for the sensors, each with two gaps to accommodate a planar microfluidic channel. The segments consisted of mineral oil and water. Sensor simulations were performed using COMSOL Software, which compare favorably with the experimental measurements.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Publisher: IEEE
Last Modified: 19 Nov 2022 08:40
URI: https://orca.cardiff.ac.uk/id/eprint/92582

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