Plasmonic Au/Co/Au nanosandwiches with enhanced magneto-optical activity
Journal article, 2008
A study was conducted to analyzed magneto-optical (MO) activity of thin films prepared by Au/Co/Au trilayers as surface plasmon polaritons. Trilyers exhibit a magnetic-field-induced nonreciprocal effect in the surface plasmon polariton propagation. The Au/Co/Au nanosandwiches, prepared by a self-assembly process, show localized surface plasmon resonances (LSPRs) that affect the optical properties of metallic nanostructures. The fabrication of the nanostructures was performed using colloidal lithography (CL). An atomic force microscopy was used to analyze the structure of thin films. The polar Kerr ellipticity and rotation spectra for an array of nanoparticles with identical dimensions were examined. Metal trilyer films were sputtered onto glass substrates. Results show that nanoparticles can be used for the development of high-sensitive magnetoplasmonic nanosensors with multiplexing capabilities.
METAL NANOPARTICLES
nanoparticles
ferromagnetic materials
OPTICAL-PROPERTIES
RESONANCE
plasmonics
optics
WAVE-GUIDES
SIZE
SENSITIVITY
magneto-optical activity
SILVER NANOPARTICLES
SPECTROSCOPY
GOLD
COLLOIDAL LITHOGRAPHY
Author
J. B. Gonzalez-Diaz
Spanish National Research Council (CSIC)
A. Garcia-Martin
Spanish National Research Council (CSIC)
J. M. Garcia-Martin
Spanish National Research Council (CSIC)
A. Cebollada
Spanish National Research Council (CSIC)
G. Armelles
Spanish National Research Council (CSIC)
Borja Sepulveda
Chalmers
Yury Alaverdyan
Chalmers, Applied Physics, Bionanophotonics
Mikael Käll
Chalmers, Applied Physics, Bionanophotonics
Small
1613-6810 (ISSN) 1613-6829 (eISSN)
Vol. 4 2 202-205Subject Categories (SSIF 2011)
Other Engineering and Technologies
DOI
10.1002/smll.200700594