Interaction of nanoparticles with substrates: effects on the dipolar behaviour of the particles

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URI: http://hdl.handle.net/10902/3867
ISSN: 1094-4087
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Autoría
Moreno Gracia, FernandoAutoridad Unican; García Cámara, Braulio; Saiz Vega, José MaríaAutoridad Unican; González Fernández, FranciscoAutoridad Unican
Fecha
2008-08
Derechos
© 2008 Optical Society of America. This paper was published in Optics Express and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OE.16.012487. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Publicado en
Optics Express, Vol. 16, Issue 17, pp. 12487-12504 (2008)
Editorial
Optical Society of America
Resumen/Abstract
In this work, we present a numerical analysis of the surface electric field of a metallic nanoparticle (either 2D or 3D) interacting with a flat substrate underneath. The influence of the distance to the substrate, particle size, the surrounding media and the substrate optical properties is analyzed as a function of the incident wavelength. We show that these are crucial factors that change the field distribution associated to the dipolar behavior of the particle. A useful parameter for illustrating the changes in the angular distribution is θmax , the angle at which the maximum of the surface electric field is located.
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