Observation of strong plasmonic heating in Au-Fe sub(2)O sub(3) nanocomposite

Plasmon-enhanced heating has been directly studied through the observation of the change of Raman spectra of Au-Fe sub(2)O sub(3) composite catalyst and Fe sub(2)O sub(3) alone under 532 nm laser excitation. Strong plasmonic heating is observed in the Au- Fe sub(2)O sub(3) nanoparticle composite whi...

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Bibliographic Details
Published in:Materials research express 2014-03, Vol.1 (1), p.1-6
Main Authors: Chien, Tzu-Ming, Hung, Wei Hsuan
Format: Article
Language:English
Subjects:
Catalysts
Gold
Heating
Irradiation
Lasers
Nanostructure
Plasmonics
Raman spectra
Spots
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Summary:Plasmon-enhanced heating has been directly studied through the observation of the change of Raman spectra of Au-Fe sub(2)O sub(3) composite catalyst and Fe sub(2)O sub(3) alone under 532 nm laser excitation. Strong plasmonic heating is observed in the Au- Fe sub(2)O sub(3) nanoparticle composite which can be plasmonically heated 200 [degrees]C higher than Fe sub(2)O sub(3) under the same laser power irradiation. A large downshift and broadening of Raman peaks are successfully observed, which is consistent evidence for the extreme plasmonic heating process. In addition, different geometries of the Au-Fe sub(2)O sub(3) composite pattern are also achieved in this study by precise control of the movement of the laser spot irradiation.
ISSN:2053-1591
2053-1591
DOI:10.1088/2053-1591/1/1/015009