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Proceedings Paper

Laser-induced microbubbles in gold and oxide nanoparticle suspensions: photoacoustic detection
Author(s): Z. Zhao; R. Myllylä
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Paper Abstract

A tunable pulsed laser with nano-second pulse duration is used to generate microbubbles in highly diluted nanoparticle (Au, TiO2 and ZnO) suspensions. The microbubble explosion may produce shock wave which is in-phase detected by a low-frequency piezoelectric transducer. The effects of particle size and category on the threshold laser fluence of shock wave generation and the wave intensity are investigated. The interaction between laser and nanoparticles has significant application in biomedicine such as photothermal diagnostic and therapy, as well as cosmetic or drug delivery in skin.

Paper Details

Date Published: 24 November 2010
PDF: 7 pages
Proc. SPIE 7376, Laser Applications in Life Sciences, 737606 (24 November 2010); doi: 10.1117/12.871461
Show Author Affiliations
Z. Zhao, Univ. of Oulu (Finland)
R. Myllylä, Univ. of Oulu (Finland)

Published in SPIE Proceedings Vol. 7376:
Laser Applications in Life Sciences
Matti Kinnunen; Risto Myllylä, Editor(s)

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