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Developement d'un capteur photoacoustique MEMS // Development of a MEMS-Based Photoacoustic Gas Sensor

Université de Montpellier · France

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About this position

Le sujet de thèse porte sur le développement d'un capteur de gaz photoacoustique à base de MEMS (Micro-Electro-Mechanical Systems) afin d'améliorer la sensibilité et la sélectivité de la détection des gaz, en particulier pour les diagnostics médicaux par analyse de l'air exhalée. La spectroscopie photoacoustique (PAS) est une technique optique qui permet de détecter les concentrations de gaz en mesurant les ondes sonores produites lorsque la lumière laser modulée est absorbée par le gaz cible. Cette technique offre ainsi une grande sensibilité, une grande sélectivité et des capacités de mesure en temps réel.

Le doctorant travaillera sur le projet ATLAS, qui vise à augmenter de manière significative la susceptibilité mécanique du dispositif MEMS afin d'atteindre et de dépasser les niveaux de performance les plus élevés dans les techniques photoacoustiques. Les principales responsabilités comprennent la conception et la fabrication de détecteurs acoustiques à base de MEMS, la réalisation d'expériences pour évaluer les performances des capteurs, l'analyse des données et la publication des résultats de la recherche.

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The PhD position focuses on developing a (Micro-Electro-Mechanical Systems) MEMS-based photoacoustic gas sensor to enhance the sensitivity and selectivity of gas detection, particularly for medical diagnostics through the analysis of exhaled breath. Photoacoustic Spectroscopy (PAS) is an optical technique that detects gas concentrations by measuring sound waves produced when modulated laser light is absorbed by the target gas, offering high sensitivity, selectivity, and real-time measurement capabilities. The PhD student will work on the ATLAS project, which aims to significantly increase the mechanical susceptibility of the MEMS device, thereby achieving and exceeding the highest performance levels in photoacoustic techniques.

Key responsibilities include designing and fabricating MEMS-based acoustic detectors, conducting experiments to evaluate sensor performance, analyzing data, and publishing research results.

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Début de la thèse : 01/10/2025

Funding category: Autre financement public

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Developement d'un capteur photoacoustique MEMS // Development of a MEMS-Based Photoacoustic Gas Sensor — Université de Montpellier