基于硼吩和相变材料的集成多层高灵敏红外频谱折射率传感器

IF 3.3 4区 物理与天体物理 Q2 CHEMISTRY, PHYSICAL
Zen Sbeah, Vishal Sorathiya, Diksha Chauhan, Abdullah Alwabli, Amar Y. Jaffar, Ahmad Alghamdi, Osama S. Faragallah
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引用次数: 0

摘要

这项研究介绍了硼吩和锗(Ge)-锑(Sb)碲(Te)(GST)作为活性等离子体材料的多层表面等离子体共振(SPR)传感器的设计和数值模拟。传感器设计采用二维(2D)建模,折射率检测范围广,从 1 微米/RIU 到 2.5 微米/RIU。拟议的设计采用顶部分析物配置,目标分析物直接置于传感器表面进行交互。为了研究中间金属层对整体光学响应的影响,考虑了各种金属,如银(Ag)、金(Au)、铝(Al)和铜(Cu)。GST 层被模拟为双态材料,包括非晶态(aGST)和晶体态(cGST)。这样就可以根据 GST 材料的相态探索传感器的可调性。此外,还针对各种器件参数(包括层厚度、宽度和采用的金属类型)进行了全面优化和验证。这些优化旨在实现传感器在灵敏度和整体功能方面的最佳性能。值得注意的是,模拟显示了 GST 层的 aGST 和 cGST 相的不同带宽和共振区。总之,由于其可调特性和宽广的折射率检测范围,这种拟议的传感器在生物分子和化学检测方面具有潜在的应用前景。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Borophene and Phase Change Material-based Integrated Multilayered High-Sensitive Refractive Index Sensor for Infrared Frequency Spectrum

Borophene and Phase Change Material-based Integrated Multilayered High-Sensitive Refractive Index Sensor for Infrared Frequency Spectrum

This work presents the design and numerical simulation of a multilayered surface plasmon resonance (SPR) sensor incorporating borophene and germanium (Ge)-antimony (Sb) telluride (Te) (GST) as active plasmonic materials. The sensor design is modelled in two dimensions (2D) and exhibits a broad refractive index detection range, from 1 to 2.5 µm/RIU. The proposed design utilizes a top-analyte configuration, where the target analyte is placed directly on the sensor surface for interaction. Various metals like Ag (silver), Au (gold), Al (aluminium), and Cu (copper) are considered for investigation of the influence of the middle metal layer on the overall optical response. The GST layer is modelled as a two-state material, accounting for its amorphous (aGST) and crystalline (cGST) phases. It allows for exploring the sensor’s tunability based on the GST material’s phase state. Furthermore, comprehensive optimization and validation processes are conducted for various device parameters, including layer thicknesses, widths, and the type of metal employed. These optimizations aim to achieve optimal sensor performance regarding sensitivity and overall functionality. Notably, the simulations reveal distinct bandwidths and resonant regions for both aGST and cGST phases of the GST layer. In conclusion, this proposed sensor provides potential application in biomolecular and chemical testing due to its tunable characteristics and broad refractive index detection range.

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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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