首页|非对称针尖结构对远红外超材料谐振性能的影响研究

非对称针尖结构对远红外超材料谐振性能的影响研究

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  • 国家科技期刊平台
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为提高远红外超材料的品质因子Q和检测灵敏度,本文研究了一种用于金属远红外超材料的非对称针尖设计.以传统双开口方形谐振环为模型,通过理论模拟,研究了开口狭缝针尖角度变化对其电场分布、谐振频谱以及品质因子Q的影响.结果表明,非对称针尖增强了谐振环的表面电场局域性,减小了谐振峰的半峰全宽,并使品质因子Q提高到传统谐振环(非针尖设计)的三倍以上.该研究结果为开发高灵敏远红外超材料传感器提供了新的思路,并为传统开口谐振环提出了一种简单实用的Q因子优化方法.
Asymmetric tip design for far infrared metamaterial sensor
This study investigates an asymmetric tip design for a far-infrared metamaterial aimed at enhancing the Q factor and detection sensitivity.Employing the conventional double-split square ring resonator as a model,we conducted theoretical simulations to investigate the impact of different tip angles on the electric field distribution,resonance spectrum,and Q factor.The results show that the asymmetric tip increases the surface electric field of the resonator,decreases the full width at half maximum(FWHM)of the resonance peak,and increases the Q fac-tor to over three times that of the conventional split ring.Our findings offer valuable insights for the development of highly sensitive far-infrared metamaterial sensors.Furthermore,we propose a straightforward and practical op-timization approach to enhance the Q factor of conventional split ring metamaterials.

terahertz sensormetamaterialfar infraredQ factor

陆小森、吴旭、魏小柯、王俊杰、王奇亮、金钻明、彭滟

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上海理工大学 光电信息与计算机工程学院,上海 200093

太赫兹传感器 超材料 远红外 品质因子Q

National Key Research and Development Program of ChinaNational Key Research and Development Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

2022YFA14040042023YFF0719200618051406233501261988102

2024

10.11972/j.issn.1001-9014.2024.03.005

红外与毫米波学报
中国光学学会 中国科学院上海技术物理所

红外与毫米波学报

CSTPCD北大核心
影响因子：0.612
ISSN：1001-9014
年,卷(期)：2024.43(3)
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