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Provedor de dados:  ArchiMer
País:  France
Título:  Downsizing and Silicon Integration of Photoacoustic Gas Cells
Autores:  Gliere, Alain
Barritault, Pierre
Berthelot, Audrey
Constancias, Christophe
Coutard, Jean-guillaume
Deslosges, Brigitte
Durrafourg, Laurent
Fedeli, Jean-marc
Garcia, Marine
Lartigue, Olivier
Lhermet, Hélène
Marchant, Adrien
Rouxel, Justin
Skubich, Jules
Teulle, Alexandre
Verdot, Thierry
Nicoletti, Sergio
Data:  2020-01
Ano:  2020
Palavras-chave:  MEMS
Photoacoustic spectroscopy
Silicon integration
Trace gas measurements
Resumo:  Downsizing and compatibility with MEMS silicon foundries is an attractive path towards a large diffusion of photoacoustic trace gas sensors. As the photoacoustic signal scales inversely with the chamber volume, a trend to miniaturization has been followed by several teams. We review in this article the approach initiated several years ago in our laboratory. Three generations of components, namely a 40 mm3 3D-printed cell, a 3.7 mm3 silicon cell, and a 2.3 mm3 silicon cell with a built-in piezoresistive pressure sensor, have been designed. The models used take into account the viscous and thermal losses, which cannot be neglected for such small-sized resonators. The components have been fabricated either by additive manufacturing or microfabrication and characterized. Based on a compilation of experimental data, a similar sub-ppm limit of detection is demonstrated. All three versions of photoacoustic cells have their own domain of operation as each one has benefits and drawbacks, regarding fabrication, implementation, and ease of use.
Tipo:  Text
Idioma:  Inglês

Editor:  Springer
Relação:  info:eu-repo/grantAgreement/EC/FP7/317884/EU//MIRIFISENS
Formato:  application/pdf
Fonte:  International Journal Of Thermophysics (0195-928X) (Springer), 2020-01 , Vol. 41 , N. 2 , P. 16 (18p.)
Direitos:  info:eu-repo/semantics/openAccess

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