Abstract
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.
Translated title of the contribution | Electromechanical films as a photoacoustic transducer |
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Original language | English |
Pages (from-to) | 16994-16999 |
Journal | Optics Express |
Volume | 17 |
Issue number | 19 |
DOIs | |
Publication status | Published - 2009 |
Publication type | A1 Journal article-refereed |
Publication forum classification
- Publication forum level 2