Abstract Herein, a highly integrated plasmonic sensor based on a multichannel metal-insulator-metal waveguide scheme for the simultaneous detection of multiple analytes is proposed. The numerical study is conducted via the finite element method based on commercially available software COMSOL. The sensor design is highly sensitive which can detect a minute change in the refractive index of the analyte. In this study, we have used the refractive index values of three different concentrations of ethanol and d -glucose solution to determine the sensor performance. It is observed that the device is highly sensitive as the operational wavelength lies in the deep shortwave infrared region. The numerically calculated sensitivity as high as 1948.67 nm/RIU is obtained for the cavity length of 325 nm which can be further improved by designing the device with large cavities. We believe that the proposed study is beneficial for the realization of the highly integrated plasmonic sensors for the lab-on-chip operations.

中文翻译：

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用于同时检测多种分析物的高度集成等离子体传感器设计

摘要 本文提出了一种基于多通道金属-绝缘体-金属波导方案的高集成等离子体传感器，用于同时检测多种分析物。数值研究是通过基于商用软件 COMSOL 的有限元方法进行的。传感器设计高度灵敏，可以检测分析物折射率的微小变化。在本研究中，我们使用三种不同浓度的乙醇和 d-葡萄糖溶液的折射率值来确定传感器性能。据观察，该器件高度敏感，因为工作波长位于深短波红外区域。数值计算灵敏度高达1948年。腔长为 325 nm 时获得 67 nm/RIU，可以通过设计具有大腔的器件进一步改进。我们认为，拟议的研究有利于实现用于芯片实验室操作的高度集成的等离子体传感器。