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Opt Express. 2009 Feb 16;17(4):2538-56.

Optical excitation and detection of vapor bubbles around plasmonic nanoparticles.

Author information

1
Laser Cytotechnology Laboratory, A. V .Lykov Heat- and Mass-Transfer Institute, 15 Brovka Street, Minsk, 220072, Belarus. ld@hmti.ac.by

Abstract

Laser-induced generation of the vapor bubbles in water around plasmonic nanoparticles was experimentally studied with optical scattering methods. Nanoparticle-generated bubbles temporally and spatially localize laser-induced thermal field and also amplify optical scattering relatively to that of gold nanoparticles. Bubble lifetimes and threshold fluencies were determined as functions of the laser (pulse duration, fluence, inter-pulse interval), nanoparticle (size, shape, aggregation state) and sample chamber parameters so to optimize bubble generation around plasmonic nanoparticles. Nanoparticle-generated bubbles are suggested as nano-scaled optical sensors and sources of localized thermal and mechanical impact.

PMID:
19219157
[Indexed for MEDLINE]

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