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Issue 12, 2013
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Local thermal elevation probing of metal nanostructures during laser illumination utilizing surface-enhanced Raman scattering from a single-walled carbon nanotube

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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.

Graphical abstract: Local thermal elevation probing of metal nanostructures during laser illumination utilizing surface-enhanced Raman scattering from a single-walled carbon nanotube

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Publication details

The article was received on 23 Oct 2012, accepted on 28 Jan 2013 and first published on 15 Feb 2013


Article type: Paper
DOI: 10.1039/C3CP43728K
Phys. Chem. Chem. Phys., 2013,15, 4270-4274

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    Local thermal elevation probing of metal nanostructures during laser illumination utilizing surface-enhanced Raman scattering from a single-walled carbon nanotube

    M. Takase, H. Nabika, S. Hoshina, M. Nara, K. Komeda, R. Shito, S. Yasuda and K. Murakoshi, Phys. Chem. Chem. Phys., 2013, 15, 4270
    DOI: 10.1039/C3CP43728K

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