Plasmonic Au/Co/Au nanosandwiches with enhanced magneto-optical activity
Artikel i vetenskaplig tidskrift, 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.

WAVE-GUIDES

COLLOIDAL LITHOGRAPHY

RESONANCE

SIZE

plasmonics

magneto-optical activity

METAL NANOPARTICLES

optics

ferromagnetic materials

SPECTROSCOPY

SENSITIVITY

nanoparticles

GOLD

OPTICAL-PROPERTIES

SILVER NANOPARTICLES

Författare

J. B. Gonzalez-Diaz

CSIC - Instituto de Microelectronica de Madrid (IMM-CNM)

A. Garcia-Martin

CSIC - Instituto de Microelectronica de Madrid (IMM-CNM)

J. M. Garcia-Martin

CSIC - Instituto de Microelectronica de Madrid (IMM-CNM)

A. Cebollada

CSIC - Instituto de Microelectronica de Madrid (IMM-CNM)

G. Armelles

CSIC - Instituto de Microelectronica de Madrid (IMM-CNM)

Borja Sepulveda

Chalmers University of Technology

Yury Alaverdyan

Chalmers, Teknisk fysik, Bionanofotonik

Mikael Käll

Chalmers, Teknisk fysik, Bionanofotonik

Small

1613-6810 (ISSN) 1613-6829 (eISSN)

Vol. 4 202-205

Ämneskategorier

Annan teknik

DOI

10.1002/smll.200700594