Enhanced Sensing Efficiency of Ultra-Narrow Band Graphene-Based Surface Plasmon Resonance Refractive Index Sensor for Biochemical Applications and Environmental Monitoring

IF 3.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL

Plasmonics Pub Date : 2024-06-01 DOI:10.1007/s11468-024-02372-8

Meshari Alsharari, Jacob Wekalao, Shobhit K. Patel, Arun Kumar U., Khaled Aliqab, Ammar Armghan

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Abstract

This paper presents an ultra-narrow band graphene-based surface plasmon resonance refractive index sensor design optimized for enhanced sensing efficiency in biomedical diagnostics and environmental monitoring applications. The proposed sensor architecture leverages a unique combination of circular and triangular resonators strategically patterned to maximize field confinement and sensing performance. Through rigorous electromagnetic simulations using COMSOL Multiphysics software, the sensor parameters are systematically optimized, achieving an exceptional sensitivity of 300 GHzRIU⁻¹ and an average detection accuracy (DA) of 6.494 across all frequency bands. The sensor also exhibits excellent performance metrics, including a high figure of merit (FOM) of 1.948 RIU⁻¹ and a quality factor (Q) ranging from 5.305 to 5.461, demonstrating its potential for accurate detection of minute refractive index variations. Additionally, the study investigates the encoding capabilities of the sensor, showcasing its potential for 2-bit data encoding applications. The synergistic combination of advanced materials and metasurface architecture paves the way for the development of highly sensitive and versatile sensing platforms for various biochemical and environmental sensing applications.

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提高超窄带石墨烯表面等离子体共振折射率传感器的传感效率，用于生化应用和环境监测

本文介绍了一种基于石墨烯的超窄带表面等离子体共振折射率传感器设计，该设计经过优化，可提高生物医学诊断和环境监测应用中的传感效率。所提出的传感器结构利用了圆形和三角形谐振器的独特组合，并对其进行了战略性图案化，以最大限度地提高场约束和传感性能。通过使用 COMSOL Multiphysics 软件进行严格的电磁模拟，对传感器参数进行了系统优化，实现了 300 GHzRIU-1 的超高灵敏度和 6.494 的所有频段平均检测精度 (DA)。该传感器还表现出卓越的性能指标，包括 1.948 RIU-1 的高优点系数 (FOM) 和 5.305 至 5.461 的品质因数 (Q)，证明了其精确检测微小折射率变化的潜力。此外，研究还调查了传感器的编码能力，展示了其在 2 位数据编码应用方面的潜力。先进材料与元表面结构的协同组合，为各种生化和环境传感应用开发高灵敏度、多功能的传感平台铺平了道路。

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来源期刊

Plasmonics 工程技术-材料科学：综合

CiteScore

5.90

自引率

6.70%

发文量

164

审稿时长

2.1 months

期刊介绍： Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.

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