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Microwave dielectric characterization of microplatelets and emulsions

Abduljabar, Ali, Hamzah, Hayder and Porch, Adrian ORCID: 2023. Microwave dielectric characterization of microplatelets and emulsions. Sensors and Actuators A: Physical 357 , 114386. 10.1016/j.sna.2023.114386

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A compact microwave sensor incorporating a dual central gap, split ring resonators (DCGRR) is proposed in this paper for microplatelet detection, characterization and dielectric measurements within a microfluidic channel passing through the capacitive regions which act as the sensing zones. The sensor was designed, optimized and fabricated using COMSOL Multiphysics. The dual resonators operate at resonant frequencies of 2.36 and 2.68GHz, respectively. Measurements of the microplatelets were carried out within a water solvent, with good agreement between the simulated and measured results. Furthermore, the sensor was tested with emulsions at different concentrations to confirm the sensor’s ability to detect small changes in emulsion concentration at the two resonant frequencies. The experimental results demonstrate the high sensitivity of resonant frequency to emulsion water content.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: Elsevier
ISSN: 0924-4247
Date of First Compliant Deposit: 18 May 2023
Date of Acceptance: 21 April 2023
Last Modified: 05 May 2024 08:36

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