Photoacoustic characteristics of carbon-based infrared absorbers

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2021-09
Major/Subject
Mcode
Degree programme
Language
en
Pages
10
Series
Photoacoustics, Volume 23
Abstract
We present an experimental comparison of photoacoustic responsivities of common highly absorbing carbon-based materials. The comparison was carried out with parameters relevant for photoacoustic power detectors and Fourier-transform infrared (FTIR) spectroscopy: we covered a broad wavelength range from the visible red to far infrared (633 nm to 25 μm) and the regime of low acoustic frequencies (< 1 kHz). The investigated materials include a candle soot-based coating, a black paint coating and two different carbon nanotube coatings. Of these, the low-cost soot absorber produced clearly the highest photoacoustic response over the entire measurement range.
Description
Funding Information: The work was funded by the Academy of Finland (Project numbers 326444 and 314364) and by the Academy of Finland Flagship Programme, Photonics Research and Innovation (PREIN), decision number: 320167 . This work made use of Tampere Microscopy Center facilities at Tampere University. Publisher Copyright: © 2021 The Author(s)
Keywords
Candle soot, Carbon nanotubes, Photoacoustic response
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Citation
Rossi , J , Uotila , J , Sharma , S , Laurila , T , Teissier , R , Baranov , A , Ikonen , E & Vainio , M 2021 , ' Photoacoustic characteristics of carbon-based infrared absorbers ' , Photoacoustics , vol. 23 , 100265 . https://doi.org/10.1016/j.pacs.2021.100265