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

Optics Express
F MorenoF González

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 theta(max), the angle at which the maximum of the surface electric field is located.

References

Aug 31, 2002·Science·YunWei Charles CaoChad A Mirkin
Oct 13, 2005·Nano Letters·Leif J SherryYounan Xia
Aug 25, 2007·Applied Spectroscopy·Rebecca A JensenSteven R Emory
Dec 15, 2007·Optics Letters·J L de la PeñaF Moreno
Feb 29, 2008·Proceedings of the National Academy of Sciences of the United States of America·Amit AgrawalShuming Nie
Oct 16, 2006·Optics Express·Gäetan Lévêque, Olivier J F Martin
Oct 17, 2007·Optics Express·Xingzhan WeiChunlei Du

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Citations

Nov 7, 2012·Chemical Society Reviews·Huanjun ChenJianfang Wang

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