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arXiv · 2012.01568

Photoacoustic characteristics of carbon-based infrared absorbers

Jussi Rossi·Juho Uotila·Sucheta Sharma·Toni Laurila·Roland Teissier·Alexei Baranov·Erkki Ikonen·Markku Vainio
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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 um) 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.

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Jussi Rossi, Juho Uotila, Sucheta Sharma, Toni Laurila, Roland Teissier, Alexei Baranov, Erkki Ikonen, Markku Vainio. 2020-11-24. Photoacoustic characteristics of carbon-based infrared absorbers. https://arxiv.org/abs/2012.01568

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