A Highly Sensitive Terahertz Waveguide Plasmonic Sensor for Ethanol Sensing

IF 3.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL Plasmonics Pub Date : 2023-05-12 DOI:10.1007/s11468-023-01875-0

A. H. M. Iftekharul Ferdous, Benjir Newaz Sathi, Md. Shahareaj Islam, Diponkar Kundu, Twana Mohammed Kak Anwer, Shaik Hasane Ahammad, Md. Amzad Hossain, Mahmoud M. A. Eid, Ahmed Nabih Zaki Rashed

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引用次数: 1

Abstract

This paper proposes and numerically investigates a spider-web-like cladding photonic crystal fiber with a hexagonal hollow core–based ethanol sensor utilizing terahertz (THz) signal. The finite element method (FEM) technique is applied to examine sensing and guiding characteristics of this sensor by using the COMSOL Multiphysics software. The sensor outperformed other ongoing studies by achieving a high relative sensitivity of 97.09% and an incredibly low confinement loss of 3.68?×?10^?12?dB/m at the optimal frequency. In addition, the sensor has a large effective area of 6.458?×?10^?08 m² and spot size with a tiny effective material loss of 0.0051?cm^?1. This study represents the huge hexagonal core and a set of rectangular air holes in spider-shaped cladding to simplify manufacture. Future applications for identifying ethanol may greatly benefit from its exceptional sensitivity and guiding qualities.

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用于乙醇传感的高灵敏度太赫兹波导等离子体传感器

本文提出并数值研究了利用太赫兹(THz)信号的六方空心乙醇传感器的蛛网状包层光子晶体光纤。利用COMSOL Multiphysics软件对该传感器的传感和导向特性进行了有限元分析。该传感器的相对灵敏度高达97.09%，约束损耗极低，仅为3.68 × 10 × 12，优于其他正在进行的研究。最佳频率下的dB/m。此外，该传感器的有效面积较大，为6.458 × 10?08 m2，光斑大小，有效材料损耗极小，为0.0051 cm。为了简化制造，本研究采用了巨大的六边形核心和蜘蛛形包层中的一组矩形气孔。乙醇鉴别的未来应用将受益于其特殊的灵敏度和指导性。

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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.