相同关键词【plasmon hybridization】论文列表 -- 中国光学期刊网

相同关键词【plasmon hybridization】论文列表

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Plasmon hybridization induced by quasi bound state in the continuum of graphene metasurfaces oriented for high-accuracy polarization-insensitive two-dimensional sensors

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Xiuyu Wang ¹Jihong Xin ¹Qun Ren ^2,3,*Haocheng Cai ²[ ... ]Wei E. I. Sha ^7,***

Author Affiliations

Abstract

¹ Tianjin Key Laboratory of Imaging and Sensing Microelectronic Technology, School of Microelectronics, Tianjin University, Tianjin 300072, China

² School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China

³ State Key Laboratory of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing 210096, China

⁴ Key Laboratory of High Speed Circuit Design and EMC of Ministry of Education, School of Electronic Engineering, Xidian University, Xi’an 710071, China

⁵ Huawei Technologies Company Ltd., Shanghai 518129, China

⁶ Department of Electronic and Electrical Engineering, University College London, London WC1E7JE, UK

⁷ Key Laboratory of Micro-Nano Electronic Devices and Smart Systems of Zhejiang Province, College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China

Plasmonics could provide compact and powerful solutions for manipulating light in deep-subwavelength dimensions, which is promising for a great range of nanophotonic technologies such as plasmonic rulers and sensors. However, the effective area of enhanced localized field induced by surface plasmon polaritons is typically restricted to the structural boundaries. In this work, we propose a method to generate high quality-factor extended electromagnetic fields via hybridizing the super-radiant state and the quasi bound state in the continuum of graphene metasurfaces. The coupling interaction involved operates as a three-level system with multiple sharp resonances immune to the polarization, which holds great promise for developing nanodevices with high sensing capacity in two dimensions.

plasmon hybridization quasi bound state in the continuum high-Q sensing

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Chinese Optics Letters

2022, 20(4): 042201

光散射理论

对称性破缺纳米核壳二聚体的近场特性研究

姜继玉 ^1,*姜莎莎 ²吕靖薇 ¹于训涛 ³[ ... ]牟海维 ¹

作者单位

摘要

¹ 东北石油大学电子科学学院, 黑龙江大庆 163318

² 大庆油田有限责任公司第四采油厂第四油矿, 黑龙江大庆 163511

³ 东北石油大学地球科学学院, 黑龙江大庆 163318

利用有限元(Finite element method, FEM)方法系统研究Au-ITO-Ag对称性破缺三层纳米核壳二聚体的近场增强特性, 并采用等离激元杂化理论对其局域表面等离子体共振(Localized Surface Plasmon Resonance, LSPR)特性进行解释。研究结果表明, 对称性破缺三层纳米核壳二聚体光谱中等离子体共振峰峰位对Au内核半径的变化极为敏感; 对称性破缺三层核壳纳米颗粒的电场主要分布在纳米核壳二聚体的表面上, Ag外壳纳米杯缺口部分的电场强度最为突出, 其高度可调节的光学特性为提高生物传感技术提供了坚实的理论基础。

对称性破缺等离激元杂化局域表面等离子体共振纳米核壳 Symmetry-breaking Plasmon hybridization LSPR Nanoshell

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光散射学报

2020, 32(3): 251

表面增强拉曼散射技术

双对称性破缺Au-TiO₂-Ag三层纳米杯的LSPR特性研究

刘强 ^1,2,*刘懿莹 ^1,2吕靖薇 ^1,2刘超 ^1,2[ ... ]牟海维 ^1,2

作者单位

摘要

¹ 东北石油大学电子科学学院,黑龙江大庆 163318

² 东北石油大学黑龙江省高校校企共建测试计量技术与仪器仪表研发中心,黑龙江大庆 163318

³ 大庆师范学院机电工程学院,黑龙江大庆 163712

设计了一种双对称性破缺Au-TiO2-Ag三层纳米杯结构,采用有限元方法分析了其局域表面等离子体共振(Localized Surface Plasmon Resonance, LSPR)特性,并采用等离激元杂化理论对LSPR现象进行理论分析。分别仿真了入射光偏振态、核壳结构参数和外界介质折射率对Au-TiO2-Ag三层纳米杯消光光谱的影响。研究结果表明,当入射光偏振方向垂直于对称轴方向时,可将反对称横向耦合模式ω-⊥〉1的共振峰波长调谐至近红外区域1100 nm附近,同时该模式共振波长随外界介质折射率的增大产生红移,这一特性可在生物传感领域得到广泛的应用。