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Near and Far-Field Properties of Nanoprisms with Rounded Edges
Photonic devices can be developed, and their working principle can be understood only by considering the phenomena taking place at the nanoscale level. Optical properties of plasmonic structures depend on their geometric parameters and are sensitive to them. Recently, many advanced methods for the p...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer US
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4018484/ https://www.ncbi.nlm.nih.gov/pubmed/24834020 http://dx.doi.org/10.1007/s11468-014-9671-x |
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author | Grześkiewicz, Bartłomiej Ptaszyński, Krzysztof Kotkowiak, Michał |
author_facet | Grześkiewicz, Bartłomiej Ptaszyński, Krzysztof Kotkowiak, Michał |
author_sort | Grześkiewicz, Bartłomiej |
collection | PubMed |
description | Photonic devices can be developed, and their working principle can be understood only by considering the phenomena taking place at the nanoscale level. Optical properties of plasmonic structures depend on their geometric parameters and are sensitive to them. Recently, many advanced methods for the preparation of nanostructures have been proposed; however still, the geometric parameters are inaccurate. Numerical simulations provide a powerful tool for the analysis of plasmonic nanostructures. To the best of our knowledge, there are not many papers on near-field and far-field properties of single nanoprism and nanoprism dimer, the so-called bowtie, with rounded edges. For this purpose, Finite Integration Technique implemented to the CST Microwave Studio was used. Besides the edge rounding, an additional modification of the resonance modes was investigated, achieved by placement of a spherical nanoparticle in the gap between the prisms. Results of numerical simulations indicate that the radius of the curvature edges strongly affects the plasmon peak localization, and this effect cannot be neglected in plasmonic device design. Increase in the radius of edge curvature causes main extinction cross-section peak blueshift in all cases analyzed. Moreover, our calculations imply that the nanoparticle in the gap between prisms strongly influences the dependence of spectral properties on the radius curvature. |
format | Online Article Text |
id | pubmed-4018484 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Springer US |
record_format | MEDLINE/PubMed |
spelling | pubmed-40184842014-05-13 Near and Far-Field Properties of Nanoprisms with Rounded Edges Grześkiewicz, Bartłomiej Ptaszyński, Krzysztof Kotkowiak, Michał Plasmonics Article Photonic devices can be developed, and their working principle can be understood only by considering the phenomena taking place at the nanoscale level. Optical properties of plasmonic structures depend on their geometric parameters and are sensitive to them. Recently, many advanced methods for the preparation of nanostructures have been proposed; however still, the geometric parameters are inaccurate. Numerical simulations provide a powerful tool for the analysis of plasmonic nanostructures. To the best of our knowledge, there are not many papers on near-field and far-field properties of single nanoprism and nanoprism dimer, the so-called bowtie, with rounded edges. For this purpose, Finite Integration Technique implemented to the CST Microwave Studio was used. Besides the edge rounding, an additional modification of the resonance modes was investigated, achieved by placement of a spherical nanoparticle in the gap between the prisms. Results of numerical simulations indicate that the radius of the curvature edges strongly affects the plasmon peak localization, and this effect cannot be neglected in plasmonic device design. Increase in the radius of edge curvature causes main extinction cross-section peak blueshift in all cases analyzed. Moreover, our calculations imply that the nanoparticle in the gap between prisms strongly influences the dependence of spectral properties on the radius curvature. Springer US 2014-03-07 2014 /pmc/articles/PMC4018484/ /pubmed/24834020 http://dx.doi.org/10.1007/s11468-014-9671-x Text en © The Author(s) 2014 https://creativecommons.org/licenses/by/2.0/ 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 Grześkiewicz, Bartłomiej Ptaszyński, Krzysztof Kotkowiak, Michał Near and Far-Field Properties of Nanoprisms with Rounded Edges |
title | Near and Far-Field Properties of Nanoprisms with Rounded Edges |
title_full | Near and Far-Field Properties of Nanoprisms with Rounded Edges |
title_fullStr | Near and Far-Field Properties of Nanoprisms with Rounded Edges |
title_full_unstemmed | Near and Far-Field Properties of Nanoprisms with Rounded Edges |
title_short | Near and Far-Field Properties of Nanoprisms with Rounded Edges |
title_sort | near and far-field properties of nanoprisms with rounded edges |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4018484/ https://www.ncbi.nlm.nih.gov/pubmed/24834020 http://dx.doi.org/10.1007/s11468-014-9671-x |
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