Electromechanical films as a photoacoustic transducer
Manninen, A.; Sand, J.; Saarela, J.; Sorvajärvi, T.; Toivonen, J.; Hernberg, R. (2009)
Manninen, A.
Sand, J.
Saarela, J.
Sorvajärvi, T.
Toivonen, J.
Hernberg, R.
2009
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi:tty-201104152687
https://urn.fi/URN:NBN:fi:tty-201104152687
Kuvaus
Peer reviewed
Tiivistelmä
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.
Kokoelmat
- TUNICRIS-julkaisut [16983]