Performance Analysis of Au/ZrN Based Dual-Core Low-Loss Photonic Crystal Fibre Biosensor for Biomedical Applications

IF 2.3 4区 计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Russel Reza Mahmud, Ali Ahnaf Hassan, Samia Monjori Sazeen, Abdullah Al Mahmud Nafiz, Shah Md. Salimullah
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引用次数: 0

Abstract

The performance of a unique tunable low-loss photonic crystal fibre (PCF)-based refractive index (RI) sensor comprising Gold (Au) and Zirconium Nitride (ZrN) as the plasmonic layer is explored in this article. A comparative analysis of three sensor configurations—Au alone, ZrN alone, and a combination of Au and ZrN—is presented. The sensor achieves the highest spectral sensitivity (WS) of 18,010 nm/RIU at an RI of 1.40 using Au alone and 6150 nm/RIU at an RI of 1.39 using ZrN alone. When both materials are combined, an utmost WS of 38,915 nm/RIU is achieved at an RI of 1.39 for both polarisations, outperforming the other configurations with a confinement loss of only 0.551 dB/cm at an RI of 1.40. This low loss facilitates easy fabrication, allowing for a maximum sensor length of 159 cm, a resolution of 2.57 × 10−6 RIU, and a limit of detection (LOD) of 6.603 × 10−11 RIU2/nm. The bimetallic layer setup enables the opportunity for enhanced optical coupling between the two different types of plasmonic material used, elevating the detection capability of the sensor. The sensing performance displayed can outperform the currently available sensors that use ZrN solely and are very well-compatible with those using Gold alone. However, using gold layer alone gave out better amplitude sensitivity (AS) results which makes it suitable for application when the cost of equipment is in question and the use of ZrN layer alone can also be a smarter choice considering the cost of material, durability and availability of Zirconium in nature when compared to Gold. The tunable sensor can be employed in biomedical applications such as monitoring the glucose level in the bloodstream of patients and detecting blood components such as RBC, WBC, haemoglobin, plasma, and water from blood samples with high precision and accuracy, being able to differentiate between potential interfering molecules.

Abstract Image

Au/ZrN双核低损耗光子晶体光纤生物传感器性能分析
本文研究了以金(Au)和氮化锆(ZrN)为等离子体层的一种独特的可调谐低损耗光子晶体光纤(PCF)折射率传感器的性能。比较分析了三种传感器的配置-单独的Au,单独的ZrN,以及Au和ZrN的组合。该传感器在单独使用Au时达到最高的光谱灵敏度(WS)为18,010 nm/RIU, RI为1.40;单独使用ZrN时达到6150 nm/RIU, RI为1.39。当两种材料结合在一起时,两种极化的最大WS为38,915 nm/RIU, RI为1.39,优于其他配置,在RI为1.40时,约束损耗仅为0.551 dB/cm。这种低损耗使得易于制造,允许最大传感器长度为159厘米,分辨率为2.57 × 10−6 RIU,检测限(LOD)为6.603 × 10−11 RIU2/nm。双金属层的设置使两种不同类型的等离子体材料之间的光学耦合得到增强,从而提高了传感器的检测能力。所显示的传感性能优于目前仅使用ZrN的传感器,并且与仅使用Gold的传感器非常好地兼容。然而,单独使用金层提供了更好的振幅灵敏度(AS)结果,这使得它适合在设备成本有问题的情况下应用,考虑到材料成本,耐久性和自然界中锆的可用性,与金相比,单独使用ZrN层也是一个更明智的选择。该可调传感器可用于生物医学应用,如监测患者血液中的葡萄糖水平,检测血液成分,如红细胞、白细胞、血红蛋白、血浆和血液样品中的水,具有高精度和准确性,能够区分潜在的干扰分子。
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来源期刊
Iet Optoelectronics
Iet Optoelectronics 工程技术-电信学
CiteScore
4.50
自引率
0.00%
发文量
26
审稿时长
6 months
期刊介绍: IET Optoelectronics publishes state of the art research papers in the field of optoelectronics and photonics. The topics that are covered by the journal include optical and optoelectronic materials, nanophotonics, metamaterials and photonic crystals, light sources (e.g. LEDs, lasers and devices for lighting), optical modulation and multiplexing, optical fibres, cables and connectors, optical amplifiers, photodetectors and optical receivers, photonic integrated circuits, photonic systems, optical signal processing and holography and displays. Most of the papers published describe original research from universities and industrial and government laboratories. However correspondence suggesting review papers and tutorials is welcomed, as are suggestions for special issues. IET Optoelectronics covers but is not limited to the following topics: Optical and optoelectronic materials Light sources, including LEDs, lasers and devices for lighting Optical modulation and multiplexing Optical fibres, cables and connectors Optical amplifiers Photodetectors and optical receivers Photonic integrated circuits Nanophotonics and photonic crystals Optical signal processing Holography Displays
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