An experimental approach for the detection and analysis of Ascorbic Acid usingOptical Fiber based Biosensor with LSPR

Abstract

Abstract The presented artile is an exploratory proceed towards the diagnosis of Ascorbic Acid (AA) using the Localized Surface Plasmon Resonance (LSPR) methodology in conjunction with a Single-Mode-Step (SMS) optical fiber structure. This fabricated biosensor presents simplicity, cost-effectiveness, and high sensitivity. To fabricate the suggested biosensor, aspecified length of optical fiber is immersed witin a solution restrain AA. The outer surface of the fiber is coated by gold nanoparticles, which generate localized surface plasmons when in contact by AA particles. The LSPR phenomenon results in a shift in the resonant wavelength of transmitted light, corresponding to AA absorptions. Laboratory appraisals have been conducted to optimize critical parameters, together with the length of the fiber, nanoparticle size, concentration, including sensing mechanisms. These appraisals involved AA concentrations and gives a linear relationship inbetween wavelength shift as well as AA absorptions.This fabricated sensor shown a good stability and consistency. Additionally, this biosensor holds significant potential for applications in the fields of food inspection, clinical investigations, including pharmaceutical research. This laboratory work involves the development of LSPR biosensor based on optical fiber structures, enhancing investigative capabilities.