Enhanced Angular Surface Plasmon Resonance Sensor Featuring Ag Nanoparticles Embedded Within a MoS2 Hosting Medium
Fatma A. Sayed, Hussein A. Elsayed, Ahmed Mehaney, Arafa H. Aly
Abstract
Abstract The angular surface plasmon resonance (ASPR) sensor can be improved theoretically in the ways presented in this publication. The mainstay of these ways is based on a comparative study of (ASPR) sensors to introduce developed (ASPR) sensors with high performances. In addition, showing how the MoS 2 as a hosting medium in Ag nanocomposite enhanced the properties of (ASPR) sensors. In this regard, the reflectance spectra of the (ASPR) sensor were obtained based on the Kretschman configuration using the angular interrogation method and the transfer matrix method at 633 nm operating wavelength. The two configurations that we have examined to determine the optimal performance are [(CaF 2 -Prism/ Chromium/Ag-metal/ BiFeO 3 / sensing medium (s.m)) and (CaF 2 -Prism/ Chromium/Ag-nanocomposite metal/ BiFeO 3 / s.m)]. In light of our discoveries, numerous parameters have been fine-tuned to attain the maximum sensitivity value across various structures: including the type of (prism, plasmonic metal, dielectric material), and the thickness of (Ag-metal, dielectric material), as well as the impact of an Ag nanoparticles embedded in MoS 2 hosting medium on the performance parameters of (ASPR) sensors. The optimum sensitivities for (ASPR) sensors with the Ag metal and Ag nanoparticles embedded in MoS 2 hosting medium are S = 357 (°/RIU) and 452.57 (°/RIU), respectively. Accordingly, the obtained performance could be of promising interest in many extensive applications such as chemical detection, biosensing, and biomedical fields.