Enhancement of surface enhanced raman scattering from arrays of hybrid Au-Ag nanoparticles via localised surface plasmon resonance

Liu, J., Cai, H., Kong, L. and Zhu, X. (2015) Enhancement of surface enhanced raman scattering from arrays of hybrid Au-Ag nanoparticles via localised surface plasmon resonance. Materials Science and Technology, 31 7: 857-865. doi:10.1179/1743284714Y.0000000653


Author Liu, J.
Cai, H.
Kong, L.
Zhu, X.
Title Enhancement of surface enhanced raman scattering from arrays of hybrid Au-Ag nanoparticles via localised surface plasmon resonance
Journal name Materials Science and Technology
ISSN 0267-0836
1743-2847
Publication date 2015-05-01
Sub-type Article (original research)
DOI 10.1179/1743284714Y.0000000653
Open Access Status Not yet assessed
Volume 31
Issue 7
Start page 857
End page 865
Total pages 9
Place of publication Leeds, United Kingdom
Publisher Maney Publishing
Collection year 2016
Language eng
Abstract The enhancement of surface enhanced raman scattering of the hybrid Au–Ag triangular nanostructure arrays via localised surface plasmon resonance is systematically investigated. The hybrid nanostructure can prevent the pure silver nanoparticles from oxidation and the stability of Au–Ag nanoparticles compared with non-coated Ag nanoparticles has been verified. Discrete dipole approximation calculated results show the size of the nanoparticle has an important effect on localised surface plasmon resonance of the hybrid nanostructure. Nanosphere lithography is used to fabricate the hybrid nanoparticle arrays with different sizes of nanoparticle. Both theoretical calculations and experimental results show that with an increase in size of the nanoparticle, positions of localised surface plasmon resonance peak are less strongly redshifted and peak of the surface enhanced Raman scattering of the arrays is obviously strengthened. A maximum intensity of the surface enhanced raman scattering can be achieved when the localised surface plasmon resonance wavelength of the hybrid Au–Ag nanoparticle arrays well match the laser excitation wavelength.
Keyword Nanosphere lithography
Arrays of hybrid Au-Ag nanoparticles
Localised surface plasmon resonance
Surface enhanced raman scattering
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Official 2016 Collection
 
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