Device for detecting an analyte via photoacoustic detection

Photoacoustic detecting device (1), intended to be applied, via a contact face (3), against a medium to be analysed, the device comprising:a hollow cavity (20) comprising a first aperture (22) produced in the contact face, the cavity being bounded by a containment shell (21) that extends around the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Teulle, Alexandre, Coutard, Jean-Guillaume, Gliere, Alain, Duraffourg, Laurent
Format:	Patent
Sprache:	eng
Schlagworte:	INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING PHYSICS TESTING
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	Photoacoustic detecting device (1), intended to be applied, via a contact face (3), against a medium to be analysed, the device comprising:a hollow cavity (20) comprising a first aperture (22) produced in the contact face, the cavity being bounded by a containment shell (21) that extends around the first aperture;a pulsed or amplitude-modulated light source (10) configured to emit, in an emission spectral band (Δλ), an incident light wave (11) through the cavity (20) to the first aperture;an acoustic transducer (28) linked to the cavity and configured to detect a photoacoustic wave (12) extending through the cavity.The photoacoustic detecting device is optimized to increase the amplitude of the photoacoustic wave detected by the acoustic transducer.