期刊
ACS NANO
卷 4, 期 4, 页码 2109-2123出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn1000222
关键词
vapor nanobubble; photothermal; scattering; pulsed laser; gold nanoparticle; plasmon resonance; vapor bubble
类别
资金
- NIH [1R21CA133641]
- Institute of International Education/SRF (New York, NY)
We have used short laser pulses to generate transient vapor nanobubbles around plasmonic nanoparticles. The photothermal, mechanical, and optical properties of such bubbles were found to be different from those of plasmonic nanoparticle and vapor bubbles, as well. This phenomenon was considered as a new complex nanosystem plasmonic nanobubble (PNB). Mechanical and optical scattering properties of PNB depended upon the nanoparticle surface and heat capacity, clusterization state, and the optical pulse length. The generation of the PNB required much higher laser pulse fluence thresholds than the explosive boiling level and was characterized by the relatively high lower threshold of the minimal size (lifetime) of PNB. Optical scattering by PNB and its diameter (measured as the lifetime) has been varied with the fluence of laser pulse, and this has demonstrated the tunable nature of PNB.
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