纳米环-七聚体金属-介电结构的多重Fano共振特性

吕靖薇; 王德宝; 刘超; 刘强; 王建鑫; 杨琳; 牟海维; 朱剑豪

doi:10.37188/CO.2022-0170

Volume 16 Issue 1

Jan. 2023

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Article Contents

Chinese Optics > 2023 > 16(1): 214-227.

LV Jing-wei, WANG De-bao, LIU Chao, LIU Qiang, WANG Jian-xin, YANG Lin, MU Hai-wei, PAUL K CHU. Multiple Fano resonance properties of nanoring-heptamer metal-dielectric structures[J]. Chinese Optics, 2023, 16(1): 214-227. doi: 10.37188/CO.2022-0170

Citation:

LV Jing-wei, WANG De-bao, LIU Chao, LIU Qiang, WANG Jian-xin, YANG Lin, MU Hai-wei, PAUL K CHU. Multiple Fano resonance properties of nanoring-heptamer metal-dielectric structures[J]. Chinese Optics, 2023, 16(1): 214-227. doi: 10.37188/CO.2022-0170

Citation:

LV Jing-wei, WANG De-bao, LIU Chao, LIU Qiang, WANG Jian-xin, YANG Lin, MU Hai-wei, PAUL K CHU. Multiple Fano resonance properties of nanoring-heptamer metal-dielectric structures[J]. Chinese Optics, 2023, 16(1): 214-227. doi: 10.37188/CO.2022-0170

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Multiple Fano resonance properties of nanoring-heptamer metal-dielectric structures

doi: 10.37188/CO.2022-0170

1.
School of Physics and Electronics Engineering, Northeast Petroleum University, Daqing 163318, China
2.
Department of Physics, City University of Hong Kong, Kowloon 999077, China

Funds: Supported by Natural Science Foundation Projects in Heilongjiang Province (No. LH2021F007)；China Postdoctoral Science Foundation (No. 2020M670881)；Study Abroad returnees merit-based Aid Foundation in Heilongjiang Province (No. 070-719900103)；Northeastern Petroleum University Scientific Research Projects (No. 2019KQ74)；Strategic Research Fund of the City University of Hong Kong (SRG) (No. 7005505)

More Information

Author Bio:
Lv Jingwei (1991—), born in Daqing, Heilongjiang Province, lecturer, master supervisor, mainly engaged in the research of surface plasmon resonance technology and nano-functional materials. E-mail: lvjingwei2009123@126.com

Liu Chao (1978—), born in Mulan, Heilongjiang Province, professor, doctoral supervisor, mainly engaged in the research of the basic theory and application of optical fiber surface plasmon resonance sensing, published more than 80 SCI papers in Opt. Exp, Nanomaterials, Opt. Mater. Exp., Res. Phys., Appl. Surf. Sci., IEEE Photon. Technol. Lett. and other journals, many of which were selected as high cited papers of ESI. E-mail: msm-liu@126.com
Corresponding author: msm-liu@126.com
Received Date: 23 Jul 2022
Rev Recd Date: 06 Sep 2022

Available Online: 28 Oct 2022

Abstract

Abstract

In order to achieve tunable multiple Fano resonance characteristics and design a refractive index sensor with high sensitivity, a nanoring-heptamer metal-dielectric composite nanoantenna structure is proposed, and the influencing factors and variation rules of its Fano resonance characteristics are studied by using the Finite Element Method (FEM). Researches show that Fano resonance characteristics of the hybrid nano-antenna is sensitive to the changes of the height, incident angle and internal gap. In addition, the electric intensity and the Purcell factor (PF) under the excitation of the electric dipole source can reach 134.74 V/m and 3214 respectively, which greatly enhances the electric intensity near the center of the nanoantenna. The hybrid nanoantenna has high Sensitivity (S) (1400 nm/RIU) and Figure of Merit (FOM) (17 RIU⁻¹), respectively, which can be used as two significant performance indices for evaluating the refractive index sensor with high sensitivity. This paper provides a feasible way to realize the tunability of Fano resonance in the composite nanoantenna and a solid theoretical basis for practical applications such as surface-enhanced Raman scattering, quantum emitters, and refractive index sensors.
- nanoantenna,
- refractive index sensor,
- Fano resonance,
- near-field enhancement

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References(30)

References

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