Optical properties of anisotropic phosphorene-graphene nanotubes and their application as label-free SPR biosensors in IR, By Hossein Shirkani

Research

Title	Optical properties of anisotropic phosphorene-graphene nanotubes and their application as label-free SPR biosensors in IR
Type	Article
Keywords	2D materials, SPR sensor, Phosphorene nanotubes, IR spectrum
Journal	Materials Science and Engineering B-Advanced Functional Solid-State Materials
DOI	https://doi.org/10.1016/j.mseb.2022.115615
Researchers	Zeynab Sadeghi (First researcher) , Hossein Shirkani (Third researcher)

Abstract

Because of anisotropic properties of phosphorene, in this paper, the effect of curvature on phosphorene is investigated by designing phosphorene nanotubes in the IR range. It was observed that creating curvature in the phosphorene monolayer would increase the absorption rate. By designing a SPR biosensor based on phosphorene nanotubes, the sensitivity of this sensor to environmental factors was investigated. The results revealed that phosphorene nanotubes showed good ability to identify materials with a refractive index in the range of 1 to 1.6, with an accuracy of 0.005. Eventually, the sensing ability of this sensor for some biomolecules such as water, MDCK, and blood was examined, and the quality factor of the proposed sensor for identifing these biomolcules was repored to be 753.8, 816.6, and 784.6 respectively. One of the most important results of comparing nanotubes with flat phosphorene was that the former proved to have a greater anisotropic effect.