Applied Physics B

, Volume 74, Issue 1, pp 57–66

Photoacoustic cavitation and heat transfer effects in the laser-induced temperature jump in water

  • W.O. Wray
  • T. Aida
  • R.B. Dyer

DOI: 10.1007/s003400100752

Cite this article as:
Wray, W., Aida, T. & Dyer, R. Appl Phys B (2002) 74: 57. doi:10.1007/s003400100752

Abstract.

The finite element method is employed to analyze photoacoustic cavitation and heat transfer occurring when modest temperature jumps (T-jumps) are induced by a laser in D2O solution, which may contain a small concentration of a protein or peptide sample. Cavitation can be initiated through a photoacoustic mechanism at intensities well below optical breakdown thresholds. Cavitation probability is related to test medium properties, initial temperature, T-jump magnitude and test region geometry. Parameters affecting thermal conduction losses are also examined because such losses limit the useful duration of the T-jump induced in protein folding experiments. From this study, guidelines are offered for reducing the occurrence of cavitation and extending the useful duration of the T-jump.

PACS: 42.62.Be; 47.55.Bx; 02.70Dh 

Copyright information

© Springer-Verlag 2001

Authors and Affiliations

  • W.O. Wray
    • 1
  • T. Aida
    • 1
  • R.B. Dyer
    • 1
  1. 1.Bioscience Division, Michelson Resource, Mail Stop J586, Los Alamos National Laboratory, Los Alamos, NM 87545, USAUS

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