Metal nanoparticles in strongly confined beams: transmission, reflection and absorption

2009/01/28 by Nassiredin M. Mojarad, Nassiredin Mojarad, Gert Zumofen +2
Engineering · Materials Science · Physics and Astronomy · #Gold and Silver Nanoparticles Synthesis and Applications #Plasmonic and Surface Plasmon Research #Thermal Radiation and Cooling Technologies #physics.optics

paper · pdf · doi:10.2971/jeos.2009.09014

published as JEOS Rap. Publ. 4, 09014 (2009) · 6 pages, 4 figures

arxiv created 2009/01/28 · openalex publication_date 2009/04/10 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31

Abstract

We investigate the interaction of tightly focused light with the surface-plasmon-polariton resonances of metal nanospheres. In particular, we compute the scattering and absorption ratios as well as transmission and reflection coefficients. Inspired by our previous work in [1], we discuss how well a metal nanoparticle approximates a point-like dipolar radiator. We find that a 100 nm silver nanosphere is very close to such an ideal oscillator. Our results have immediate implications for single nanoparticle spectroscopy and microscopy as well as plasmonics.

Citations

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