Photoacoustic detector

{
  "id": "MLC-T-CHM-008790",
  "term": "Photoacoustic detector",
  "field": "Chemistry",
  "definition": "A device that measures the acoustic waves generated when a sample absorbs modulated electromagnetic radiation. The absorbed energy causes localized heating and expansion, producing pressure waves that are detected by a microphone. This detector is highly sensitive and can be used for both gaseous and condensed phase samples, providing information about their optical absorption properties.",
  "subject": "Analytical Chemistry",
  "see_also": [
    "pressure-sensitive detector",
    "radiation detector"
  ],
  "references": [
    "PAC, 1995, 67, 1745. 'Nomenclature, symbols, units and their usage in spectrochemical analysis-XI. Detection of radiation (IUPAC Recommendations 1995)' on page 1752 (https://doi.org/10.1351/pac199567101745)"
  ],
  "url": "https://mlchart.com/terminology/chemistry/photoacoustic-detector/"
}