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

Journal Article · Sat Oct 01 00:00:00 EDT 2011 · Applied Optics

DOI:https://doi.org/10.1364/AO.50.005600· OSTI ID:22036743

Li, Wang; Wei, Xiong; Nishijima, Yoshiaki; Yokota, Yukie; Ueno, Kosei; Misawa, Hiroaki; Jianrong, Qiu; Gang, Bi

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 nanorod 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.

• OSTI ID: 22036743
• Journal Information: Applied Optics, Vol. 50, Issue 28; Other Information: (c) 2011 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6935
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTRON BEAMS
GOLD
LAYERS
MODIFICATIONS
NANOSTRUCTURES
RED SHIFT
RESONANCE
SILVER
SURFACES