Tian, Qirui, Gao, Han  ORCID: https://orcid.org/0000-0001-5890-9717, Lou, Yufei, Martin, Tracey ORCID: https://orcid.org/0000-0003-2690-4908, Jiang, Wenguo and Benedikt, Johannes ORCID: https://orcid.org/0000-0002-9583-2349
2026.
Iteratively calibrated s11 thermometry for microsecond-scale intra-pulse heating in 96-well plates.
Presented at: 2026 IEEE MTT-S Radio Frequency Systems and Applications Symposium (IMS RFSA),
Boston, MA, USA,
7-12 June 2026.
2026 IEEE MTT-S Radio Frequency Systems and Applications Symposium (IMS RFSA).
IEEE,
pp. 430-433.
10.1109/imsrfsa70221.2026.11624232
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Abstract
This work is motivated by the need to separate genuine bio-electromagnetic effects from thermal artefacts in a 2.2 GHz pulsed exposure platform for 96-well cell experiments. We repurpose the system as an S11-based thermometer by performing a low-power static heating run in a 200 µ.L well, aligning S11 with a fibre-optic probe and fitting a first-order heating model. A lightweight piecewise-linear S11-temperature mapping then improves the bulk temperature accuracy from an initial 0.29 °C down to the millikelvin range, with <0.1 °C agreement over a 20 °C span. Using this calibrated mapping at MHz sampling under treatment-like conditions (1 kHz pulse trains, 100 µ.s "on" / 900 µ.s "off"), we resolve reproducible intra-pulse self-heating of ~0.2 K per burst which was completely averaged out by conventional 1–10 Hz fibre thermometry.
| Item Type: | Conference or Workshop Item - published (Paper) |
|---|---|
| Date Type: | Publication |
| Status: | Published |
| Schools: | Schools > Engineering Schools > Medicine |
| Publisher: | IEEE |
| ISBN: | 979-8-3315-4769-1 |
| Date of First Compliant Deposit: | 9 September 2026 |
| Last Modified: | 09 Sep 2026 10:30 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/188832 |
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