Double-sided photonic crystal fiber (PCF) temperature and refractive index (RI) sensor based on surface plasmon resonance (SPR)

IF 1.3 4区工程技术 Q4 CHEMISTRY, ANALYTICAL

Instrumentation Science & Technology Pub Date : 2022-05-23 DOI:10.1080/10739149.2022.2078835

Jia-Kai Wang, Yu Ying, Zhi-jun Gao, Ke Xu, Qi Qi, G. Si

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引用次数: 3

Abstract

Abstract A double-sided photonic crystal fiber (PCF) temperature and refractive index (RI) sensor based on surface plasmon resonance (SPR) is reported to simultaneously measure temperature and RI. An arc groove covered with gold is filled with chloroform for temperature detection. The D-shaped plane coated with silver is in direct contact with the analyte to provide the RI. Two independent channels distinguish temperature and RI changes, thus completely solving the cross-sensitivity problem. The sensing characteristics of the plane coating, arc coating, and inner ring coating are discussed. The influence of gold film closure on the optimum RI measurement range was identified, and the best sensing structure of chloroform as a temperature-sensitive material is obtained. The sensing characteristics of different types of metal films are investigated. It is concluded that the band separation may be achieved by plating gold film and silver film in the arc groove and D-plane, respectively. The influence of the central angle of the arc groove on the sensor characteristics was investigated. High-order resonance may be avoided at a 180° center angle. The influence of the thickness of the metal film on the sensitivity of the sensor is studied numerically, and the optimal coating thickness is 50 nm. This work simplifies the selection of the RI range of sensing materials and provides a new approach to solve the high-order resonance and band interference in SPR multi-parameter sensors.

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基于表面等离子体共振(SPR)的双面光子晶体光纤(PCF)温度与折射率传感器

摘要本文报道了一种基于表面等离子体共振（SPR）的双面光子晶体光纤（PCF）温度和折射率（RI）传感器，用于同时测量温度和RI。用氯仿填充覆盖有金的弧形凹槽，用于温度检测。涂覆有银的D形平面与分析物直接接触以提供RI。两个独立的通道区分温度和RI的变化，从而完全解决了交叉灵敏度问题。讨论了平面涂层、电弧涂层和内环涂层的传感特性。确定了金膜封闭对最佳RI测量范围的影响，并获得了氯仿作为温度敏感材料的最佳传感结构。研究了不同类型金属薄膜的传感特性。得出的结论是，可以通过分别在弧槽和D平面中镀金膜和银膜来实现带分离。研究了圆弧槽中心角对传感器特性的影响。在180°中心角时可以避免高阶谐振。数值研究了金属膜厚度对传感器灵敏度的影响，最佳涂层厚度为50 nm。这项工作简化了传感材料RI范围的选择，并为解决SPR多参数传感器中的高阶谐振和带干扰提供了一种新的方法。

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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来源期刊

Instrumentation Science & Technology 工程技术-分析化学

CiteScore

3.50

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Instrumentation Science & Technology is an internationally acclaimed forum for fast publication of critical, peer reviewed manuscripts dealing with innovative instrument design and applications in chemistry, physics biotechnology and environmental science. Particular attention is given to state-of-the-art developments and their rapid communication to the scientific community. Emphasis is on modern instrumental concepts, though not exclusively, including detectors, sensors, data acquisition and processing, instrument control, chromatography, electrochemistry, spectroscopy of all types, electrophoresis, radiometry, relaxation methods, thermal analysis, physical property measurements, surface physics, membrane technology, microcomputer design, chip-based processes, and more. Readership includes everyone who uses instrumental techniques to conduct their research and development. They are chemists (organic, inorganic, physical, analytical, nuclear, quality control) biochemists, biotechnologists, engineers, and physicists in all of the instrumental disciplines mentioned above, in both the laboratory and chemical production environments. The journal is an important resource of instrument design and applications data.