Novel nano-plasmonic sensing platform based on vertical conductive bridge

Abstract A novel nano-plasmonic sensing platform based on vertical conductive bridge was suggested as an alternative geometry for taking full advantages of unique properties of conductive junction while substantially alleviating burdens in lithographic process. The effects of various geometrical par...

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Autores principales:	Hyo-Seung Park, Jongkil Park, Joon Young Kwak, Gyu-Weon Hwang, Doo-Seok Jeong, Kyeong-Seok Lee
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3d17c6e70b1d4740bb80e5db7927f5f1
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spelling	oai:doaj.org-article:3d17c6e70b1d4740bb80e5db7927f5f12021-12-02T10:44:14ZNovel nano-plasmonic sensing platform based on vertical conductive bridge10.1038/s41598-021-82899-62045-2322https://doaj.org/article/3d17c6e70b1d4740bb80e5db7927f5f12021-02-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82899-6https://doaj.org/toc/2045-2322Abstract A novel nano-plasmonic sensing platform based on vertical conductive bridge was suggested as an alternative geometry for taking full advantages of unique properties of conductive junction while substantially alleviating burdens in lithographic process. The effects of various geometrical parameters on the plasmonic properties were systematically investigated. Theoretical simulation on this structure demonstrates that the presence of vertical conductive bridge with smaller diameter sandwiched between two adjacent thin nanodiscs excites a bridged mode very similar to the charge transfer plasmon and exhibits a remarkable enhancement in the extinction efficiency and the sensitivity when the electric field of incident light is parallel to the conductive bridge. Furthermore, for the electric field perpendicular to the bridge, another interesting feature is observed that two magnetic resonance modes are excited symmetrically through open-gaps on both sides of the bridge together with strongly enhanced electric field intensity, which provides a very favorable environment as a surface enhanced Raman scattering substrate for fluid analysis. These results verify a great potential and versatility of our approach for use as a nanoplasmonic sensing platform. In addition, we demonstrated the feasibility of fabrication process of vertical conductive bridge and high tunability in controlling the bridge width.Hyo-Seung ParkJongkil ParkJoon Young KwakGyu-Weon HwangDoo-Seok JeongKyeong-Seok LeeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Hyo-Seung Park Jongkil Park Joon Young Kwak Gyu-Weon Hwang Doo-Seok Jeong Kyeong-Seok Lee Novel nano-plasmonic sensing platform based on vertical conductive bridge
description	Abstract A novel nano-plasmonic sensing platform based on vertical conductive bridge was suggested as an alternative geometry for taking full advantages of unique properties of conductive junction while substantially alleviating burdens in lithographic process. The effects of various geometrical parameters on the plasmonic properties were systematically investigated. Theoretical simulation on this structure demonstrates that the presence of vertical conductive bridge with smaller diameter sandwiched between two adjacent thin nanodiscs excites a bridged mode very similar to the charge transfer plasmon and exhibits a remarkable enhancement in the extinction efficiency and the sensitivity when the electric field of incident light is parallel to the conductive bridge. Furthermore, for the electric field perpendicular to the bridge, another interesting feature is observed that two magnetic resonance modes are excited symmetrically through open-gaps on both sides of the bridge together with strongly enhanced electric field intensity, which provides a very favorable environment as a surface enhanced Raman scattering substrate for fluid analysis. These results verify a great potential and versatility of our approach for use as a nanoplasmonic sensing platform. In addition, we demonstrated the feasibility of fabrication process of vertical conductive bridge and high tunability in controlling the bridge width.
format	article
author	Hyo-Seung Park Jongkil Park Joon Young Kwak Gyu-Weon Hwang Doo-Seok Jeong Kyeong-Seok Lee
author_facet	Hyo-Seung Park Jongkil Park Joon Young Kwak Gyu-Weon Hwang Doo-Seok Jeong Kyeong-Seok Lee
author_sort	Hyo-Seung Park
title	Novel nano-plasmonic sensing platform based on vertical conductive bridge
title_short	Novel nano-plasmonic sensing platform based on vertical conductive bridge
title_full	Novel nano-plasmonic sensing platform based on vertical conductive bridge
title_fullStr	Novel nano-plasmonic sensing platform based on vertical conductive bridge
title_full_unstemmed	Novel nano-plasmonic sensing platform based on vertical conductive bridge
title_sort	novel nano-plasmonic sensing platform based on vertical conductive bridge
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3d17c6e70b1d4740bb80e5db7927f5f1
work_keys_str_mv	AT hyoseungpark novelnanoplasmonicsensingplatformbasedonverticalconductivebridge AT jongkilpark novelnanoplasmonicsensingplatformbasedonverticalconductivebridge AT joonyoungkwak novelnanoplasmonicsensingplatformbasedonverticalconductivebridge AT gyuweonhwang novelnanoplasmonicsensingplatformbasedonverticalconductivebridge AT dooseokjeong novelnanoplasmonicsensingplatformbasedonverticalconductivebridge AT kyeongseoklee novelnanoplasmonicsensingplatformbasedonverticalconductivebridge
_version_	1718396758143270912

Novel nano-plasmonic sensing platform based on vertical conductive bridge

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