Vasimalla Yesudasu, Singh Lokendra
IEEE Trans Nanobioscience. 2023 Apr;22(2):365-374. doi: 10.1109/TNB.2022.3191971. Epub 2023 Mar 31.
Nowadays, Food additives and preservatives have become a hot topic especially formalin, which is a chemical substance used to preserve food. Chronic cancer is caused by swallowing the formalin-contaminated food on a regular basis. As a result, detection of the formalin in food ingredients is a critical need, and this requirement is becoming increasingly important in new terrains. Therefore, a new approach, planar waveguide-based surface plasmon resonance (SPR) sensor is presented in this paper employing silver-chloride materials-black phosphorus structure to detect the formalin. In this study, the optimization of metal thickness and optimal performance of chloride material are analyzed by observing the transmittance power and resonance shift for conventional and chloride-based sensors, respectively. Moreover, the performance parameters, such as sensitivity of 344/ RIU, quality-factor of [Formula: see text], detection-accuracy of 3.34 and figure-of-merit of 164.74, are observed for the proposed sensor. Furthermore, the performance comparative study is conducted and found that the proposed sensor highlighted the enhanced the SPR sensor and highlighted the performance of FOM. Finally, the electromagnetic filed distributions of the proposed WG-based SPR sensor are shown using the Opti-FDTD software.
如今，食品添加剂和防腐剂已成为热门话题，尤其是福尔马林，它是一种用于保存食品的化学物质。长期食用被福尔马林污染的食物会导致慢性癌症。因此，检测食品成分中的福尔马林至关重要，而且这一要求在新领域正变得越来越重要。为此，本文提出了一种基于平面波导的表面等离子体共振（SPR）传感器，采用氯化银材料-黑磷结构来检测福尔马林。在本研究中，分别通过观察传统传感器和基于氯化物的传感器的透射功率和共振位移，分析了金属厚度的优化和氯化物材料的最佳性能。此外，所提出的传感器的性能参数，如灵敏度为344/RIU、品质因数为[公式：见原文]、检测精度为3.34以及优值为164.74，均被观察到。此外，进行了性能对比研究，发现所提出的传感器突出了SPR传感器的增强效果，并突出了优值的性能。最后，使用Opti-FDTD软件展示了所提出的基于波导的SPR传感器的电磁场分布。
