The aim of the paper is to see the influence of Franckeite on the sensing application of SPR based biosensor. Franckeite is an emerging (2D) material from sulfosalt family having naturally presented spontaneously vander Waals (vdW) Heterostructure. We have investigated and carried out detailed analysis to design the high-performance biosensor by exploiting the unique properties of Franckeite. The performance of the biosensor is quantified in terms of Sensitivity and other performance parameters. Proposed work is theoretical where we have proposed a surface plasmon resonance (SPR) biosensor in combination of the nanosheets of (Bimetallic layer + Franckeite + TMDC + BP) in order to enhance the sensitivity. It’s also shown in the paper that by sandwiching a buffer (polymer) with low refractive index (close to water) between metal layer (Au in this case) and dielectric medium prism, the value of FWHM reduced dramatically and significant enhancement observed in FOM (100RIU−1) and detection accuracy (2.38 deg−1). We have also illustrated the concept of long range –SPR (LRSPR) in this paper by giving the comparative analysis of different polymers. As an air-stable 2D material, we expect that 2D Franckeite Nano sheets could have potential applications in the field of chemical as well as biosensing application in the future.

中文翻译：

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磺盐和聚合物对SPR生物传感器性能参数的影响

该论文的目的是了解 Franckeite 对基于 SPR 的生物传感器的传感应用的影响。Franckeite 是一种来自磺盐家族的新兴 (2D) 材料，具有自然自发呈现的范德华 (vdW) 异质结构。我们已经研究并进行了详细分析，通过利用 Franckeite 的独特特性来设计高性能生物传感器。生物传感器的性能根据灵敏度和其他性能参数进行量化。拟议的工作是理论上的，我们提出了一种表面等离子体共振 (SPR) 生物传感器，结合（双金属层 + Franckeite + TMDC + BP）的纳米片，以提高灵敏度。论文中还表明，通过在金属层（在这种情况下为 Au）和电介质棱镜之间夹入低折射率（接近水）的缓冲剂（聚合物），FWHM 的值显着降低，并在 FOM 中观察到显着增强（ 100RIU−1) 和检测精度 (2.38 deg−1)。我们还在本文中通过对不同聚合物的比较分析来说明长程-SPR（LRSPR）的概念。作为一种空气稳定的 2D 材料，我们预计 2D Franckeite Nano 片材未来在化学领域和生物传感领域都有潜在的应用。我们还在本文中通过对不同聚合物的比较分析来说明长程-SPR（LRSPR）的概念。作为一种空气稳定的 2D 材料，我们预计 2D Franckeite Nano 片材未来在化学领域和生物传感领域都有潜在的应用。我们还在本文中通过对不同聚合物的比较分析来说明长程-SPR（LRSPR）的概念。作为一种空气稳定的 2D 材料，我们预计 2D Franckeite Nano 片材未来在化学领域和生物传感领域都有潜在的应用。