Cargando…
Far-field coherent thermal emission from polaritonic resonance in individual anisotropic nanoribbons
Coherent thermal emission deviates from the Planckian blackbody emission with a narrow spectrum and strong directionality. While far-field thermal emission from polaritonic resonance has shown the deviation through modelling and optical characterizations, an approach to achieve and directly measure...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6435684/ https://www.ncbi.nlm.nih.gov/pubmed/30914641 http://dx.doi.org/10.1038/s41467-019-09378-5 |
_version_ | 1783406687352258560 |
---|---|
author | Shin, Sunmi Elzouka, Mahmoud Prasher, Ravi Chen, Renkun |
author_facet | Shin, Sunmi Elzouka, Mahmoud Prasher, Ravi Chen, Renkun |
author_sort | Shin, Sunmi |
collection | PubMed |
description | Coherent thermal emission deviates from the Planckian blackbody emission with a narrow spectrum and strong directionality. While far-field thermal emission from polaritonic resonance has shown the deviation through modelling and optical characterizations, an approach to achieve and directly measure dominant coherent thermal emission has not materialised. By exploiting the large disparity in the skin depth and wavelength of surface phonon polaritons, we design anisotropic SiO(2) nanoribbons to enable independent control of the incoherent and coherent behaviours, which exhibit over 8.5-fold enhancement in the emissivity compared with the thin-film limit. Importantly, this enhancement is attributed to the coherent polaritonic resonant effect, hence, was found to be stronger at lower temperature. A thermometry platform is devised to extract, for the first time, the thermal emissivity from such dielectric nanoemitters with nanowatt-level emitting power. The result provides new insight into the realisation of spatial and spectral distribution control for far-field thermal emission. |
format | Online Article Text |
id | pubmed-6435684 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-64356842019-03-28 Far-field coherent thermal emission from polaritonic resonance in individual anisotropic nanoribbons Shin, Sunmi Elzouka, Mahmoud Prasher, Ravi Chen, Renkun Nat Commun Article Coherent thermal emission deviates from the Planckian blackbody emission with a narrow spectrum and strong directionality. While far-field thermal emission from polaritonic resonance has shown the deviation through modelling and optical characterizations, an approach to achieve and directly measure dominant coherent thermal emission has not materialised. By exploiting the large disparity in the skin depth and wavelength of surface phonon polaritons, we design anisotropic SiO(2) nanoribbons to enable independent control of the incoherent and coherent behaviours, which exhibit over 8.5-fold enhancement in the emissivity compared with the thin-film limit. Importantly, this enhancement is attributed to the coherent polaritonic resonant effect, hence, was found to be stronger at lower temperature. A thermometry platform is devised to extract, for the first time, the thermal emissivity from such dielectric nanoemitters with nanowatt-level emitting power. The result provides new insight into the realisation of spatial and spectral distribution control for far-field thermal emission. Nature Publishing Group UK 2019-03-26 /pmc/articles/PMC6435684/ /pubmed/30914641 http://dx.doi.org/10.1038/s41467-019-09378-5 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Shin, Sunmi Elzouka, Mahmoud Prasher, Ravi Chen, Renkun Far-field coherent thermal emission from polaritonic resonance in individual anisotropic nanoribbons |
title | Far-field coherent thermal emission from polaritonic resonance in individual anisotropic nanoribbons |
title_full | Far-field coherent thermal emission from polaritonic resonance in individual anisotropic nanoribbons |
title_fullStr | Far-field coherent thermal emission from polaritonic resonance in individual anisotropic nanoribbons |
title_full_unstemmed | Far-field coherent thermal emission from polaritonic resonance in individual anisotropic nanoribbons |
title_short | Far-field coherent thermal emission from polaritonic resonance in individual anisotropic nanoribbons |
title_sort | far-field coherent thermal emission from polaritonic resonance in individual anisotropic nanoribbons |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6435684/ https://www.ncbi.nlm.nih.gov/pubmed/30914641 http://dx.doi.org/10.1038/s41467-019-09378-5 |
work_keys_str_mv | AT shinsunmi farfieldcoherentthermalemissionfrompolaritonicresonanceinindividualanisotropicnanoribbons AT elzoukamahmoud farfieldcoherentthermalemissionfrompolaritonicresonanceinindividualanisotropicnanoribbons AT prasherravi farfieldcoherentthermalemissionfrompolaritonicresonanceinindividualanisotropicnanoribbons AT chenrenkun farfieldcoherentthermalemissionfrompolaritonicresonanceinindividualanisotropicnanoribbons |