Tu-POS-10 - Tailoring Acoustic Modes for Ultra-Sensitive Photoacoustic Gas Detection

Event

EUROSENSORS 2026
2026-09-06 - 2026-09-09
Zurich

Band

Poster

Chapter

Photonics And Optical Sensors

Author(s)

M. S. Moussa, J. -F. Lampin, S. Eliet, A. Mazzamurro, O. Bou Matar - Univ. Lille,Lille (France), R. Viard - Groupe Endress+Hauser,Fribourg-en-Brisgau (Allemagne), S. Khattou, M. Amrani - Univ. Mohammed I,Oujda (Morocco)

Pages

541 - 542

DOI

10.5162/eurosensors2026/Tu-POS-10

ISBN

978-3-910600-12-6

Price

free

Abstract

Photoacoustic gas sensing is experiencing rapid development due to its high sensitivity and selectivity. In this work, we introduce a novel methodology for the design of photoacoustic cells based on a rigorous analysis of acoustic eigenmodes and excitation mechanisms. We demonstrate that the nature of excitation (acoustic versus photoacoustic) strongly influences modal selection and efficiency. A finite element framework is developed to identify optimal resonant modes under realistic conditions. Based on this approach, a photoacoustic system was fabricated and experimentally validated. High sensitivity detection of volatile organic compounds is demonstrated, achieving detection limits in the ppb range.