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URN:
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http://URN.fi/URN:NBN:fi:tty-201104152687
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Title:
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Electromechanical films as a photoacoustic transducer |
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Author:
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Manninen, Albert; Sand, Johan; Saarela, Jaakko; Sorvajärvi, Tapio; Toivonen, Juha; Hernberg, Rolf |
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Publication type:
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Artikkeli - Article |
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Issue date:
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2009 |
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DOI:
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http://dx.doi.org/10.1364/OE.17.016994
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Description:
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Copyright 2009 The Optical Society |
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University:
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Tampereen teknillinen yliopisto - Tampere University of Technology |
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Faculty:
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Luonnontieteiden ja ympäristötekniikan tiedekunta – Faculty of Science and Environmental Engineering |
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Department:
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Fysiikan laitos |
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Abstract:
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An electromechanical film, EMFi, is utilized as a transducer in a photoacoustic (PA) gas sensor. The film is a sensitive acoustic transducer, it is easily formable, and it exhibits a wide frequency response regardless of its large surface area. As a demonstration of its capabilities, the EMFi-based PA detector is used to measure NO2 with pulsed excitation at 436 and 473 nm. The minimum detectable absorption coefficient is extrapolated to be 5•10−7 cm−1. Improvements for EMFi-based PA detector are discussed. |
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Copyright:
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This publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited. |