• Photoacoustic spectroscopy of solids and surfaces

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/jcsc/090/03/0153-0214

    • Keywords

       

      Photoacoustic spectroscopy; optoacoustic spectroscopy; photoacoustic effect

    • Abstract

       

      After briefly reviewing the theory and instrumentation, results from a variety of experiments carried out by the authors on the photoacoustic spectroscopy of solids and surfaces by employing an indigenous spectrometer are discussed in the light of the recent literature. Some of the important findings discussed are, phase angle spectroscopy, anomalous behaviour of monolayers, unusual frequency dependence in small cell volumes, spectra of a variety of solids including amorphous arsenic chalcogenides, photoacoustic detection of phase transitions and determination of surface areas and surface acidities of oxides. Recent developments such as piezoelectric photoacoustic spectroscopy, depth profiling and subsurface imaging are also presented.

    • Author Affiliations

       

      P Ganguly1 C N R Rao1

      1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore - 560012, India
    • Dates

       
  • Journal of Chemical Sciences | News

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