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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 28 — Oct. 1, 2011
  • pp: 5600–5605

Spectral properties of nanoengineered Ag/Au bilayer rods fabricated by electron beam lithography

Li Wang, Wei Xiong, Yoshiaki Nishijima, Yukie Yokota, Kosei Ueno, Hiroaki Misawa, Jianrong Qiu, and Gang Bi  »View Author Affiliations


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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