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Spectral properties of nanoengineered Ag/Au bilayer rods fabricated by electron beam lithography |
Applied Optics, Vol. 50, Issue 28, pp. 5600-5605 (2011)
http://dx.doi.org/10.1364/AO.50.005600
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Abstract
Ag/Au bimetallic nanoparticles possess the combinatory advantages of Au and Ag nanoparticles and can also be utilized to tune the properties of localized surface plasmon resonance. Ag/Au bilayer nanorods were prepared by electron beam lithography, and their spectral properties were investigated. Compared with Ag monolayer nanorods, Ag/Au bilayer nanorods show broader localized surface plasmon resonance bands, and the longitudinal mode and transverse mode localized surface plasmon bands show blueshift and redshift, respectively. The maximum near-field intensity of the longitudinal mode of the Ag/Au nano rod is less than half that of the Ag/Au nanorod without gold layer. Shape-induced modification of Ag/Au bilayer nanorods on their spectral properties was also discussed.
© 2011 Optical Society of America
OCIS Codes
(160.3900) Materials : Metals
(240.6680) Optics at surfaces : Surface plasmons
(160.4236) Materials : Nanomaterials
ToC Category:
Optics at Surfaces
History
Original Manuscript: May 12, 2011
Revised Manuscript: July 12, 2011
Manuscript Accepted: July 12, 2011
Published: September 30, 2011
Citation
Li Wang, Wei Xiong, Yoshiaki Nishijima, Yukie Yokota, Kosei Ueno, Hiroaki Misawa, Jianrong Qiu, and Gang Bi, "Spectral properties of nanoengineered Ag/Au bilayer rods fabricated by electron beam lithography," Appl. Opt. 50, 5600-5605 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-28-5600
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