Spectral dependence of third-order susceptibility of Au triangular nanoplates

Abstract We experimentally investigated the spectral dependence of the third-order susceptibility $$\chi^{\left( 3 \right)}$$ χ 3 of Au triangular nanoplates in a broad wavelength region (400–1,000 nm). Complex shaped plasmonic nanoparticles provide a promising route to achieve control of their opti...

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Autores principales:	Boyi Zhang, Rodrigo Sato, Miyoko Tanaka, Yoshihiko Takeda
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/00ac90d5258640688c868d5c2644cc1b
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spelling	oai:doaj.org-article:00ac90d5258640688c868d5c2644cc1b2021-12-02T16:45:53ZSpectral dependence of third-order susceptibility of Au triangular nanoplates10.1038/s41598-020-70868-42045-2322https://doaj.org/article/00ac90d5258640688c868d5c2644cc1b2020-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-70868-4https://doaj.org/toc/2045-2322Abstract We experimentally investigated the spectral dependence of the third-order susceptibility $$\chi^{\left( 3 \right)}$$ χ 3 of Au triangular nanoplates in a broad wavelength region (400–1,000 nm). Complex shaped plasmonic nanoparticles provide a promising route to achieve control of their optical properties at the nanoscale. However, little is known about the effects of geometrical parameters to the optical nonlinearities and underlying mechanisms of the plasmon modes. Here, we obtained the $$\chi^{\left( 3 \right)}$$ χ 3 of Au triangular nanoplates featuring a narrow plasmon resonance that is tunable in the visible and near-IR regions. This work demonstrates that the plasmonic triangular nanoplates simultaneously shows self-focusing and -defocusing, and saturable and reverse-saturable absorption properties at specific wavelength regions. Maximum amplitudes of real and imaginary components are − 6.8 × 10−18 m2/V2 at 668 nm and − 6.7 × 10−18 m2/V2 at 646 nm, respectively. Spectral dependence of the quantity $$\chi^{\left( 3 \right)}$$ χ 3 enables comparison between different shaped plasmonic NPs to boost active plasmonic applications performance.Boyi ZhangRodrigo SatoMiyoko TanakaYoshihiko TakedaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-6 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Boyi Zhang Rodrigo Sato Miyoko Tanaka Yoshihiko Takeda Spectral dependence of third-order susceptibility of Au triangular nanoplates
description	Abstract We experimentally investigated the spectral dependence of the third-order susceptibility $$\chi^{\left( 3 \right)}$$ χ 3 of Au triangular nanoplates in a broad wavelength region (400–1,000 nm). Complex shaped plasmonic nanoparticles provide a promising route to achieve control of their optical properties at the nanoscale. However, little is known about the effects of geometrical parameters to the optical nonlinearities and underlying mechanisms of the plasmon modes. Here, we obtained the $$\chi^{\left( 3 \right)}$$ χ 3 of Au triangular nanoplates featuring a narrow plasmon resonance that is tunable in the visible and near-IR regions. This work demonstrates that the plasmonic triangular nanoplates simultaneously shows self-focusing and -defocusing, and saturable and reverse-saturable absorption properties at specific wavelength regions. Maximum amplitudes of real and imaginary components are − 6.8 × 10−18 m2/V2 at 668 nm and − 6.7 × 10−18 m2/V2 at 646 nm, respectively. Spectral dependence of the quantity $$\chi^{\left( 3 \right)}$$ χ 3 enables comparison between different shaped plasmonic NPs to boost active plasmonic applications performance.
format	article
author	Boyi Zhang Rodrigo Sato Miyoko Tanaka Yoshihiko Takeda
author_facet	Boyi Zhang Rodrigo Sato Miyoko Tanaka Yoshihiko Takeda
author_sort	Boyi Zhang
title	Spectral dependence of third-order susceptibility of Au triangular nanoplates
title_short	Spectral dependence of third-order susceptibility of Au triangular nanoplates
title_full	Spectral dependence of third-order susceptibility of Au triangular nanoplates
title_fullStr	Spectral dependence of third-order susceptibility of Au triangular nanoplates
title_full_unstemmed	Spectral dependence of third-order susceptibility of Au triangular nanoplates
title_sort	spectral dependence of third-order susceptibility of au triangular nanoplates
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/00ac90d5258640688c868d5c2644cc1b
work_keys_str_mv	AT boyizhang spectraldependenceofthirdordersusceptibilityofautriangularnanoplates AT rodrigosato spectraldependenceofthirdordersusceptibilityofautriangularnanoplates AT miyokotanaka spectraldependenceofthirdordersusceptibilityofautriangularnanoplates AT yoshihikotakeda spectraldependenceofthirdordersusceptibilityofautriangularnanoplates
_version_	1718383433495871488

Spectral dependence of third-order susceptibility of Au triangular nanoplates

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