基于等离子纳米天线阵列的空气参数监测传感器

IF 3.3 4区 物理与天体物理 Q2 CHEMISTRY, PHYSICAL Plasmonics Pub Date : 2024-08-24 DOI:10.1007/s11468-024-02504-0
Akash Srivastava, Devendra Chack
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引用次数: 0

摘要

等离子体纳米天线能够将自由空间的光耦合到亚波长尺寸的结构中,并增强电场的约束能力,因而备受赞誉。等离子体最有前途的应用之一是折射率传感。为了研究纳米天线的光学特性和近场计算,我们使用 Lumerical 软件等市售麦克斯韦方程求解器进行了三维有限差分时域(FDTD)模拟。与等离子纳米天线二聚体相比,当使用等离子纳米天线阵列时,电场强度和最大吸收截面都有明显增强。所提出的装置可用于感知二氧化碳(CO2)气体浓度和大气压力等主要空气参数的变化。在对两种情况进行分析后,灵敏度分别高达 488 nm/RIU 和 500 nm/RIU。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Plasmonic Nanoantenna Array-Based Sensor for Air Parameters Monitoring Purpose

Plasmonic nanoantennas have earned significant acclaim for their remarkable ability to couple light from free space into sub-wavelength-sized structures and to enhance the confinement of the electric field. One of the most promising applications of plasmonics is refractive index sensing. To study the optical properties and near-field calculations of the nanoantenna, three-dimensional finite-difference time-domain (FDTD) simulations were conducted using commercially available Maxwell equation solvers, such as Lumerical software. A significant enhancement in electric field intensity and maximum absorption cross-section were observed when an array of plasmonic nanoantennas was used compared to a plasmonic nanoantenna dimer. The proposed device is used to sense changes in major air parameters such as carbon dioxide (CO2) gas concentration and atmospheric pressure. Sensitivities as high as 488 nm/RIU and 500 nm/RIU, respectively, were achieved after analyzing both cases.

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来源期刊
Plasmonics
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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