Photoacoustic spectroscopy

{
  "id": "MLC-T-CHM-008793",
  "term": "Photoacoustic spectroscopy",
  "field": "Chemistry",
  "definition": "A spectroscopic technique that measures the acoustic waves generated when a sample absorbs modulated or pulsed electromagnetic radiation. The absorbed energy is converted into heat, causing thermal expansion and pressure waves that are detected by a microphone or piezoelectric sensor. This method is particularly effective for opaque or scattering samples, providing information similar to absorption spectroscopy.",
  "subject": "Organic and Biomolecular Chemistry",
  "see_also": [
    "isooptoacoustic point",
    "photoacoustic effect",
    "wavelength"
  ],
  "references": [
    "PAC, 1996, 68, 2223. 'Glossary of terms used in photochemistry (IUPAC Recommendations 1996)' on page 2259 (https://doi.org/10.1351/pac199668122223)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/photoacoustic-spectroscopy/"
}