Microwave dielectric characterisation with simultaneous temperature monitoring for gas flow systems using a hairpin resonator

Barter, Michael ORCID: https://orcid.org/0000-0002-4404-9397, Smith, Gemma L, Yang, Sihai, Schröder, Martin, Jones, Martin Owen and Porch, Adrian ORCID: https://orcid.org/0000-0001-5293-8883 2024. Microwave dielectric characterisation with simultaneous temperature monitoring for gas flow systems using a hairpin resonator. Presented at: 2023 Asia-Pacific Microwave Conference (APMC), 05-08 December 2023. Proceedings Asia-Pacific Microwave Conference (APMC). IEEE, pp. 599-601. 10.1109/APMC57107.2023.10439680

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Abstract

Microwave hairpin resonators are effective in monitoring the dielectric properties of materials in the frequency range 1-10 GHz. These resonators can be constructed in a way to allow full line of sight to the whole length of a sample contained in a quartz tube. This allows thermal monitoring of the full sample to observe changes in sample temperature, not possible using a standard cavity resonator. In this work, the dielectric properties of a Metal Organic Framework (MOF) sample (MFM-170) are monitored during absorption and desorption of SO 2 , using a 2.45 GHz host hairpin resonator, and the exothermic and endothermic nature of these process are monitored in-situ using a thermal camera. Such measurements can be used to study the amount of absorbed polar species, together with the dynamics of absorption via microwave loss.

Item Type:	Conference or Workshop Item (Paper)
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	IEEE
Last Modified:	05 Mar 2024 12:45
URI:	https://orca.cardiff.ac.uk/id/eprint/166838

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