Open AccessOptical excitation and detection of vapor bubbles around plasmonic nanoparticles
Author(s) -
Dmitri O. Lapotko
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.002538
Subject(s) - materials science , fluence , plasmon , optics , nanoparticle , plasmonic nanoparticles , laser , scattering , light scattering , bubble , pulse duration , optoelectronics , mie scattering , excitation , nanotechnology , physics , quantum mechanics , mechanics
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.