title: Local thermal elevation probing of metal nanostructures during laser illumination utilizing surface-enhanced Raman scattering from a single-walled carbon nanotube.
abstract: 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.
authors: Department of Chemistry, Faculty of Science, Hokkaido University, Sapporo, Hokkaido, Japan.
authors: Mai
authors: M
authors: Takase
authors: Hideki
authors: H
authors: Nabika
authors: Shinji
authors: S
authors: Hoshina
authors: Masanobu
authors: M
authors: Nara
authors: Kei-ichiro
authors: K
authors: Komeda
authors: Ryukou
authors: R
authors: Shito
authors: Satoshi
authors: S
authors: Yasuda
authors: Kei
authors: K
authors: Murakoshi