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Optical Response of Silver Nanoneedles on a Mirror
Plasmonic properties of metal nanostructures are appealing due to their potential to enhance photovoltaics or sensing performance. Our aim was to identify the plasmonic characteristics of silver nanoneedles on a reflective layer in the polarized optical response. Experimental ellipsometry results ar...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4567595/ https://www.ncbi.nlm.nih.gov/pubmed/26380576 http://dx.doi.org/10.1007/s11468-015-9900-y |
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author | Keeman, Arjan Kooij, E. Stefan van Dam, Dick Schropp, Ruud E. I. Di Vece, Marcel |
author_facet | Keeman, Arjan Kooij, E. Stefan van Dam, Dick Schropp, Ruud E. I. Di Vece, Marcel |
author_sort | Keeman, Arjan |
collection | PubMed |
description | Plasmonic properties of metal nanostructures are appealing due to their potential to enhance photovoltaics or sensing performance. Our aim was to identify the plasmonic characteristics of silver nanoneedles on a reflective layer in the polarized optical response. Experimental ellipsometry results are complemented by finite-difference time-domain (FDTD) calculations. Plasmon resonances on the nanoneedles can indeed be observed in the polarized optical response. This study reveals the details of the complex antenna-like behaviour of the nanoneedles which gives an agreement between experiment and FDTD simulation. The simulations show that the plasmon resonances lead to an effective negative refractive index, originating from the negative refractive index of the nanoneedles in combination with its supporting substrate, i.e. a mirror. This original study of a complex plasmonic system by ellipsometry and FDTD has great relevance for applications, making use of intricate light matter interaction. |
format | Online Article Text |
id | pubmed-4567595 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-45675952015-09-15 Optical Response of Silver Nanoneedles on a Mirror Keeman, Arjan Kooij, E. Stefan van Dam, Dick Schropp, Ruud E. I. Di Vece, Marcel Plasmonics Article Plasmonic properties of metal nanostructures are appealing due to their potential to enhance photovoltaics or sensing performance. Our aim was to identify the plasmonic characteristics of silver nanoneedles on a reflective layer in the polarized optical response. Experimental ellipsometry results are complemented by finite-difference time-domain (FDTD) calculations. Plasmon resonances on the nanoneedles can indeed be observed in the polarized optical response. This study reveals the details of the complex antenna-like behaviour of the nanoneedles which gives an agreement between experiment and FDTD simulation. The simulations show that the plasmon resonances lead to an effective negative refractive index, originating from the negative refractive index of the nanoneedles in combination with its supporting substrate, i.e. a mirror. This original study of a complex plasmonic system by ellipsometry and FDTD has great relevance for applications, making use of intricate light matter interaction. Springer US 2015-02-25 2015 /pmc/articles/PMC4567595/ /pubmed/26380576 http://dx.doi.org/10.1007/s11468-015-9900-y Text en © The Author(s) 2015 https://creativecommons.org/licenses/by/4.0/ Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. |
spellingShingle | Article Keeman, Arjan Kooij, E. Stefan van Dam, Dick Schropp, Ruud E. I. Di Vece, Marcel Optical Response of Silver Nanoneedles on a Mirror |
title | Optical Response of Silver Nanoneedles on a Mirror |
title_full | Optical Response of Silver Nanoneedles on a Mirror |
title_fullStr | Optical Response of Silver Nanoneedles on a Mirror |
title_full_unstemmed | Optical Response of Silver Nanoneedles on a Mirror |
title_short | Optical Response of Silver Nanoneedles on a Mirror |
title_sort | optical response of silver nanoneedles on a mirror |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4567595/ https://www.ncbi.nlm.nih.gov/pubmed/26380576 http://dx.doi.org/10.1007/s11468-015-9900-y |
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