期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 15, 期 12, 页码 4270-4274出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cp43728k
关键词
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资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan [18750001, 16205026, 17034002]
- Priority Area Strong Photon-Molecule Coupling Fields [470]
Localized laser-induced heating of an individual Au nano-dimer was quantitatively evaluated by measuring the surface-enhanced Raman scattering (SERS) from an isolated single-walled carbon nanotube (SWNT) supported above the nano-gap between the two metal centres of the dimer. The SERS measurement showed an apparent wavenumber shift in the G-band of the Raman spectra with an increase in the power of the illuminated laser light, indicating the laser-induced local thermal elevation of the Au nano-dimer. In addition, it was found that the effect of the laser illumination on the thermal elevation in air was larger than that in aqueous solution, indicating that the localized laser-heating effect is strongly influenced by the surrounding environment. The present technique provides a measure of the highly localized heating effect of plasmonic metal nanostructures under photo-illumination.
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