Dispersive 2D Cherenkov radiation on a dielectric nano-film

Abstract We report a modified two-dimensional Cherenkov radiation, which occurs on a high-index dielectric nano-film driven by uniformly moving electron-beam. It is essentially different from the ordinary Cherenkov radiation in that, in the nondispersive medium, it shows unique dispersion characteri...

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Autor principal:	Weihao Liu
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9276e35fe1ff4c8a9a9e2c10557faf04
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spelling	oai:doaj.org-article:9276e35fe1ff4c8a9a9e2c10557faf042021-12-02T11:40:53ZDispersive 2D Cherenkov radiation on a dielectric nano-film10.1038/s41598-017-06176-12045-2322https://doaj.org/article/9276e35fe1ff4c8a9a9e2c10557faf042017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-06176-1https://doaj.org/toc/2045-2322Abstract We report a modified two-dimensional Cherenkov radiation, which occurs on a high-index dielectric nano-film driven by uniformly moving electron-beam. It is essentially different from the ordinary Cherenkov radiation in that, in the nondispersive medium, it shows unique dispersion characteristics—the waves with higher frequencies radiate at larger Cherenkov angles. Its radiation frequency and direction are essentially determined by structure parameters as well as the beam-velocity. By means of fully electromagnetic simulations and theoretical analyses, we explored the mechanism and requirements of this radiation. This new Cherenkov radiation may lead to promising applications in a broad range of fields.Weihao LiuNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Weihao Liu Dispersive 2D Cherenkov radiation on a dielectric nano-film
description	Abstract We report a modified two-dimensional Cherenkov radiation, which occurs on a high-index dielectric nano-film driven by uniformly moving electron-beam. It is essentially different from the ordinary Cherenkov radiation in that, in the nondispersive medium, it shows unique dispersion characteristics—the waves with higher frequencies radiate at larger Cherenkov angles. Its radiation frequency and direction are essentially determined by structure parameters as well as the beam-velocity. By means of fully electromagnetic simulations and theoretical analyses, we explored the mechanism and requirements of this radiation. This new Cherenkov radiation may lead to promising applications in a broad range of fields.
format	article
author	Weihao Liu
author_facet	Weihao Liu
author_sort	Weihao Liu
title	Dispersive 2D Cherenkov radiation on a dielectric nano-film
title_short	Dispersive 2D Cherenkov radiation on a dielectric nano-film
title_full	Dispersive 2D Cherenkov radiation on a dielectric nano-film
title_fullStr	Dispersive 2D Cherenkov radiation on a dielectric nano-film
title_full_unstemmed	Dispersive 2D Cherenkov radiation on a dielectric nano-film
title_sort	dispersive 2d cherenkov radiation on a dielectric nano-film
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/9276e35fe1ff4c8a9a9e2c10557faf04
work_keys_str_mv	AT weihaoliu dispersive2dcherenkovradiationonadielectricnanofilm
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Dispersive 2D Cherenkov radiation on a dielectric nano-film

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