Photoacoustic characteristics of carbon-based infrared absorbers

Jussi Rossi*, Juho Uotila, Sucheta Sharma, Toni Laurila, Roland Teissier, Alexei Baranov, Erkki Ikonen, Markku Vainio

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

8 Citations (Scopus)
69 Downloads (Pure)


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.

Original languageEnglish
Article number100265
Number of pages10
Publication statusPublished - Sept 2021
MoE publication typeA1 Journal article-refereed


  • Candle soot
  • Carbon nanotubes
  • Photoacoustic response


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