Microsphere Assisted Super-resolution Optical Imaging of Plasmonic Interaction between Gold Nanoparticles

Abstract Conventional far-field microscopy cannot directly resolve the sub-diffraction spatial distribution of localized surface plasmons in metal nanostructures. Using BaTiO3 microspheres as far-field superlenses by collecting the near-field signal, we can map the origin of enhanced two-photon phot...

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Autores principales:	Beibei Hou, Mengran Xie, Ruoyu He, Minbiao Ji, Sonja Trummer, Rainer H. Fink, Luning Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/c7709eff5b7149628baefe0215c50c26
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spelling	oai:doaj.org-article:c7709eff5b7149628baefe0215c50c262021-12-02T11:53:13ZMicrosphere Assisted Super-resolution Optical Imaging of Plasmonic Interaction between Gold Nanoparticles10.1038/s41598-017-14193-32045-2322https://doaj.org/article/c7709eff5b7149628baefe0215c50c262017-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-14193-3https://doaj.org/toc/2045-2322Abstract Conventional far-field microscopy cannot directly resolve the sub-diffraction spatial distribution of localized surface plasmons in metal nanostructures. Using BaTiO3 microspheres as far-field superlenses by collecting the near-field signal, we can map the origin of enhanced two-photon photoluminescence signal from the gap region of gold nanosphere dimers and gold nanorod dimers beyond the diffraction limit, on a conventional far-field microscope. As the angle θ between dimer’s structural axis and laser polarisation changes, photoluminescence intensity varies with a cos4θ function, which agrees quantitatively with numerical simulations. An optical resolution of about λ/7 (λ: two-photon luminescence central wavelength) is demonstrated at dimer’s gap region.Beibei HouMengran XieRuoyu HeMinbiao JiSonja TrummerRainer H. FinkLuning ZhangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Beibei Hou Mengran Xie Ruoyu He Minbiao Ji Sonja Trummer Rainer H. Fink Luning Zhang Microsphere Assisted Super-resolution Optical Imaging of Plasmonic Interaction between Gold Nanoparticles
description	Abstract Conventional far-field microscopy cannot directly resolve the sub-diffraction spatial distribution of localized surface plasmons in metal nanostructures. Using BaTiO3 microspheres as far-field superlenses by collecting the near-field signal, we can map the origin of enhanced two-photon photoluminescence signal from the gap region of gold nanosphere dimers and gold nanorod dimers beyond the diffraction limit, on a conventional far-field microscope. As the angle θ between dimer’s structural axis and laser polarisation changes, photoluminescence intensity varies with a cos4θ function, which agrees quantitatively with numerical simulations. An optical resolution of about λ/7 (λ: two-photon luminescence central wavelength) is demonstrated at dimer’s gap region.
format	article
author	Beibei Hou Mengran Xie Ruoyu He Minbiao Ji Sonja Trummer Rainer H. Fink Luning Zhang
author_facet	Beibei Hou Mengran Xie Ruoyu He Minbiao Ji Sonja Trummer Rainer H. Fink Luning Zhang
author_sort	Beibei Hou
title	Microsphere Assisted Super-resolution Optical Imaging of Plasmonic Interaction between Gold Nanoparticles
title_short	Microsphere Assisted Super-resolution Optical Imaging of Plasmonic Interaction between Gold Nanoparticles
title_full	Microsphere Assisted Super-resolution Optical Imaging of Plasmonic Interaction between Gold Nanoparticles
title_fullStr	Microsphere Assisted Super-resolution Optical Imaging of Plasmonic Interaction between Gold Nanoparticles
title_full_unstemmed	Microsphere Assisted Super-resolution Optical Imaging of Plasmonic Interaction between Gold Nanoparticles
title_sort	microsphere assisted super-resolution optical imaging of plasmonic interaction between gold nanoparticles
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/c7709eff5b7149628baefe0215c50c26
work_keys_str_mv	AT beibeihou microsphereassistedsuperresolutionopticalimagingofplasmonicinteractionbetweengoldnanoparticles AT mengranxie microsphereassistedsuperresolutionopticalimagingofplasmonicinteractionbetweengoldnanoparticles AT ruoyuhe microsphereassistedsuperresolutionopticalimagingofplasmonicinteractionbetweengoldnanoparticles AT minbiaoji microsphereassistedsuperresolutionopticalimagingofplasmonicinteractionbetweengoldnanoparticles AT sonjatrummer microsphereassistedsuperresolutionopticalimagingofplasmonicinteractionbetweengoldnanoparticles AT rainerhfink microsphereassistedsuperresolutionopticalimagingofplasmonicinteractionbetweengoldnanoparticles AT luningzhang microsphereassistedsuperresolutionopticalimagingofplasmonicinteractionbetweengoldnanoparticles
_version_	1718394833726341120

Microsphere Assisted Super-resolution Optical Imaging of Plasmonic Interaction between Gold Nanoparticles

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