Novel Detection of Diesel Adulteration using Silver coated Surface Plasmon Resonance Sensor

Abstract In this study, we propose a silver-coated (SPR-surface plasmon resonance) based biosensor for the detection of diesel adulteration for the first time in the field of bio-sensing. Here, the numerical analysis is done by COMSOL Multiphysics V-5.1 and fully simulation software MATLAB-V16 on 30190 mesh elements, 2792 boundary elements, and 206593 degrees of freedom using finite element method (FEM) at 250C (298 K) for different concentration level. Moreover, the entire experiment on SPR-PCF is done for the major optical parameters for instance- Birefringence (Bi), Coupling-length (Lc), Power-fraction (Pf ), Confinement-loss (αc), Amplitudesensitivity (Sa), Wavelength-sensitivity (Sw), Resolution (Rl), Transmittance (Tx), Transmittance variance (Tv), Relative-sensitivity (Sr), Figure-of-merit (FOM) and Resonance (R2) etc which are respectively to their corresponding maximum performance profiles of 2.5 ???? 10-3, 1300 μm, 99.93%, 1200 –1600 dB/cm, -7950 RIU-1 , 49941.169 nm/RIU, 6.319 ???? 10-4 RIU, -180 dB, 170 dB/RIU, 97.25%, 980, and 0.98312 at operating wavelength 0.5–2 μm. Therefore, it is noticed that the proposed sensor can be able to establish itself as one of the toughest candidates in fiber sensing. Also, diesel adulteration sensing including the entire working procedure using a SPR platform will be regarded as a novel procedure for diesel sensing in the history of photonics.