Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure

Abstract Herein, we design a high sensitivity with a multi-mode plasmonic sensor based on the square ring-shaped resonators containing silver nanorods together with a metal–insulator-metal bus waveguide. The finite element method can analyze the structure's transmittance properties and electrom...

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Autores principales:	Yuan-Fong Chou Chau, Tan Yu Ming, Chung-Ting Chou Chao, Roshan Thotagamuge, Muhammad Raziq Rahimi Kooh, Hung Ji Huang, Chee Ming Lim, Hai-Pang Chiang
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/d2de1109bf524647bdfc576130e0aaa8
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spelling	oai:doaj.org-article:d2de1109bf524647bdfc576130e0aaa82021-12-02T18:33:55ZSignificantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure10.1038/s41598-021-98001-z2045-2322https://doaj.org/article/d2de1109bf524647bdfc576130e0aaa82021-09-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-98001-zhttps://doaj.org/toc/2045-2322Abstract Herein, we design a high sensitivity with a multi-mode plasmonic sensor based on the square ring-shaped resonators containing silver nanorods together with a metal–insulator-metal bus waveguide. The finite element method can analyze the structure's transmittance properties and electromagnetic field distributions in detail. Results show that the coupling effect between the bus waveguide and the side-coupled resonator can enhance by generating gap plasmon resonance among the silver nanorods, increasing the cavity plasmon mode in the resonator. The suggested structure obtained a relatively high sensitivity and acceptable figure of merit and quality factor of about 2473 nm/RIU (refractive index unit), 34.18 1/RIU, and 56.35, respectively. Thus, the plasmonic sensor is ideal for lab-on-chip in gas and biochemical analysis and can significantly enhance the sensitivity by 177% compared to the regular one. Furthermore, the designed structure can apply in nanophotonic devices, and the range of the detected refractive index is suitable for gases and fluids (e.g., gas, isopropanol, optical oil, and glucose solution).Yuan-Fong Chou ChauTan Yu MingChung-Ting Chou ChaoRoshan ThotagamugeMuhammad Raziq Rahimi KoohHung Ji HuangChee Ming LimHai-Pang ChiangNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-17 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Yuan-Fong Chou Chau Tan Yu Ming Chung-Ting Chou Chao Roshan Thotagamuge Muhammad Raziq Rahimi Kooh Hung Ji Huang Chee Ming Lim Hai-Pang Chiang Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure
description	Abstract Herein, we design a high sensitivity with a multi-mode plasmonic sensor based on the square ring-shaped resonators containing silver nanorods together with a metal–insulator-metal bus waveguide. The finite element method can analyze the structure's transmittance properties and electromagnetic field distributions in detail. Results show that the coupling effect between the bus waveguide and the side-coupled resonator can enhance by generating gap plasmon resonance among the silver nanorods, increasing the cavity plasmon mode in the resonator. The suggested structure obtained a relatively high sensitivity and acceptable figure of merit and quality factor of about 2473 nm/RIU (refractive index unit), 34.18 1/RIU, and 56.35, respectively. Thus, the plasmonic sensor is ideal for lab-on-chip in gas and biochemical analysis and can significantly enhance the sensitivity by 177% compared to the regular one. Furthermore, the designed structure can apply in nanophotonic devices, and the range of the detected refractive index is suitable for gases and fluids (e.g., gas, isopropanol, optical oil, and glucose solution).
format	article
author	Yuan-Fong Chou Chau Tan Yu Ming Chung-Ting Chou Chao Roshan Thotagamuge Muhammad Raziq Rahimi Kooh Hung Ji Huang Chee Ming Lim Hai-Pang Chiang
author_facet	Yuan-Fong Chou Chau Tan Yu Ming Chung-Ting Chou Chao Roshan Thotagamuge Muhammad Raziq Rahimi Kooh Hung Ji Huang Chee Ming Lim Hai-Pang Chiang
author_sort	Yuan-Fong Chou Chau
title	Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure
title_short	Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure
title_full	Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure
title_fullStr	Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure
title_full_unstemmed	Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure
title_sort	significantly enhanced coupling effect and gap plasmon resonance in a mim-cavity based sensing structure
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/d2de1109bf524647bdfc576130e0aaa8
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_version_	1718377948206071808

Significantly enhanced coupling effect and gap plasmon resonance in a MIM-cavity based sensing structure

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