Numerical analysis of a metal-insulator-metal waveguide-integrated magnetic field sensor operating at sub-wavelength scales

IF 5.4 Q1 CHEMISTRY, ANALYTICAL Sensing and Bio-Sensing Research Pub Date : 2023-12-27 DOI:10.1016/j.sbsr.2023.100618

Mohammad Ashraful Haque , Rummanur Rahad , Md. Omar Faruque , Md Sadi Mobassir , Rakibul Hasan Sagor

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Abstract

This article introduces a novel plasmonic magnetic field sensor (MFS) that utilizes a Metal-Insulator-Metal (MIM) waveguide configuration with a W-shaped cavity filled with magnetic fluid (MF). The MFS's unique design combines the advantages of plasmonic sensing, offering a promising solution for the detection of magnetic field strength. It operates based on the inherent properties of surface plasmon polaritons and the magneto-optical properties of MF, resulting in a shift in resonant wavelength. The performance of the proposed MFS has been investigated through numerical calculation employing the finite element method (FEM). Remarkably, the MFS exhibits a maximum magnetic field sensitivity of 49.11 pm/Oe, covering a detection range from 33 Oe to 200 Oe. The recorded figure of merit (FOM) and Q-factor of the MFS are 18.39 and 18.4 respectively, attesting to its high performance and reliability. This innovation has the potential to revolutionize fields such as navigation, medical diagnostics, and robotics technologies by seamlessly integrating optical sensing into traditional devices. The proposed sensor's excellent performance, compact size, and cost-effectiveness position it as a promising technology for widespread adoption, contributing to advancements in magnetic field sensing across scientific, industrial, and technological domains.

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以亚波长尺度工作的金属-绝缘体-金属波导集成磁场传感器的数值分析

本文介绍了一种新型等离子体磁场传感器（MFS），它采用金属-绝缘体-金属（MIM）波导配置，带有一个充满磁性流体（MF）的 W 形谐振器。MFS 的独特设计结合了等离子传感、MIM 波导和磁性流体的优势，为磁场检测提供了一种前景广阔的解决方案。它的运行基于表面等离子体极化子与 MF 的磁光特性之间的相互作用，从而导致谐振波长发生可测量的偏移。通过采用有限元法模拟的数值研究，对所提出的 MFS 性能进行了严格检验。值得注意的是，MFS 的最大磁场灵敏度为 49.11 pm/Oe，探测范围从 33 Oe 到 200 Oe。MFS 的优点系数（FOM）和 Q 系数分别为 18.39 和 18.4，证明了它的高性能和可靠性。通过将光学传感技术无缝集成到传统设备中，这项创新有望在导航、医疗诊断和机器人技术等领域掀起一场革命。MFS 可提供有关磁场强度的准确信息。该传感器性能优越、设计紧凑、成本效益高，是一项有望得到广泛应用的技术，有助于推动科学、工业和技术领域磁场传感技术的发展。

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来源期刊

Sensing and Bio-Sensing Research Engineering-Electrical and Electronic Engineering

CiteScore

10.70

自引率

3.80%

发文量

审稿时长

87 days

期刊介绍： Sensing and Bio-Sensing Research is an open access journal dedicated to the research, design, development, and application of bio-sensing and sensing technologies. The editors will accept research papers, reviews, field trials, and validation studies that are of significant relevance. These submissions should describe new concepts, enhance understanding of the field, or offer insights into the practical application, manufacturing, and commercialization of bio-sensing and sensing technologies. The journal covers a wide range of topics, including sensing principles and mechanisms, new materials development for transducers and recognition components, fabrication technology, and various types of sensors such as optical, electrochemical, mass-sensitive, gas, biosensors, and more. It also includes environmental, process control, and biomedical applications, signal processing, chemometrics, optoelectronic, mechanical, thermal, and magnetic sensors, as well as interface electronics. Additionally, it covers sensor systems and applications, µTAS (Micro Total Analysis Systems), development of solid-state devices for transducing physical signals, and analytical devices incorporating biological materials.