Unusual magneto-optical behavior induced by local dielectric variations under localized surface plasmon excitations

We study the effect of global and local dielectric variations on the polarization conversion r ps response of ordered nickel nanowires embedded in an alumina matrix. When considering local changes, we observe a non-monotonous behavior of the r ps , its intensity unusually modified far beyond to what...

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Bibliographic Details
Published in:Nanoscale research letters 2011-06, Vol.6 (1), p.408-408, Article 408
Main Authors: González-Díaz, Juan B, García-Martín, Antonio, Reig, Gaspar Armelles
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Materials Science
Molecular Medicine
Nano Express
Nanochemistry
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
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Summary:We study the effect of global and local dielectric variations on the polarization conversion r ps response of ordered nickel nanowires embedded in an alumina matrix. When considering local changes, we observe a non-monotonous behavior of the r ps , its intensity unusually modified far beyond to what it is expected for a monotonous change of the whole refractive index of the embedding medium. This is related to the local redistribution of the electromagnetic field when a localized surface plasmon is excited. This finding may be employed to develop and improve new biosensing magnetoplasmonic devices.
ISSN:1556-276X
1931-7573
1556-276X
DOI:10.1186/1556-276X-6-408