Effect of second-harmonic superimposition on efficient induction of sonochemical effect

K. Kawabata, S. Umemura

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


A new method of insonation for inducing sonochemical effects efficiently without using mechanical or acoustical agitation was investigated. When the second harmonic (1.5 MHz) was superimposed on the fundamental (750 kHz) at the optimum acoustical power ratio (1:1), the oxidation rate was one or more orders of magnitude higher than that obtained at the same total acoustic power when the fundamental or the second harmonic was used alone. Moreover, the second-harmonic superimposition reduced the threshold of acoustic power for the sonochemical reaction to half of the threshold when the fundamental alone was used.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalUltrasonics Sonochemistry
Issue number1
Publication statusPublished - 1996
Externally publishedYes


  • Iodide
  • Oxidation
  • Second harmonic superimposition
  • Sonochemical reaction

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Environmental Chemistry
  • Radiology Nuclear Medicine and imaging
  • Acoustics and Ultrasonics
  • Organic Chemistry
  • Inorganic Chemistry


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