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Influence of pollutants in the magneto-dielectric response of silicon nanoparticles

Abstract: The influence of the degree of purity of a silicon nanoparticle on its resonances, either electric or magnetic, is assessed by using Mie theory as well as finite-element simulations. In particular, it is shown that the main effect of the increase of absorption due to the pollutants is observed in the magnetic resonances. Concerning Kerker's conditions for the directionality of the scattering [J. Opt. Soc. Am. 73, 765 (1983)], it is found that both are strongly shifted when the material?s purity is varied. Resistive losses confirm the quenching of magnetic resonances, showing that the region of influence in the magnetic dipole resonance is much larger than in the electric one, although it has been found that losses are not critical for silicon content over 99.50%.

 Autoría: Sanz J.M., De La Osa R.A., Barreda A.I., Saiz J.M., González F., Moreno F.,

 Fuente: Optics Letters, 2014, 39(11), 3142-3144

 Editorial: Optical Society of America (OSA) A partir de 2009: The Optical Society (OSA)

 Fecha de publicación: 01/06/2014

 Nº de páginas: 3

 Tipo de publicación: Artículo de Revista

 DOI: 10.1364/OL.39.003142

 ISSN: 0146-9592,1539-4794,1071-2763

 Url de la publicación: https://doi.org/10.1364/OL.39.003142

Autoría

JUAN MARCOS SANZ CASADO

RODRIGO ALCARAZ DE LA OSA

ÁNGELA INMACULADA BARREDA GÓMEZ