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Proceedings Paper

Chaos in the pressure generated by laser absorption by microparticles
Author(s): Bernard S. Gerstman; Eshel Faraggi; Jinming Sun
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Paper Abstract

We present initial results showing chaotic behavior in the pressure signals generated by laser absorption by a microparticle. Specifically, the system of a melanosome immersed in water is investigated. We describe how the system manifests chaos, and the implications for causing damage to the surrounding material. We also find that a characteristic acoustic time of the absorber, the time it takes a sound wave to traverse the absorber, known as the stress confinement time, defines an important time scale for laser pulse duration. For pulse durations shorter than the stress confinement time, the pressure response is periodic, while for pulse durations greater than the stress confinement time, chaotic pressure transients are observed.

Paper Details

Date Published: 28 February 2006
PDF: 8 pages
Proc. SPIE 6084, Optical Interactions with Tissue and Cells XVII, 608406 (28 February 2006); doi: 10.1117/12.644846
Show Author Affiliations
Bernard S. Gerstman, Florida International Univ. (United States)
Eshel Faraggi, Florida International Univ. (United States)
Jinming Sun, Florida International Univ. (United States)

Published in SPIE Proceedings Vol. 6084:
Optical Interactions with Tissue and Cells XVII
Steven L. Jacques; William P. Roach, Editor(s)

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