Early detection of Chikungunya virus utilizing the Surface Plasmon Resonance comprising of Silver-Silicon-PtSe 2 Multi-Layer Structure

The sensing performance parameters of the SPR sensors are sensitivity, detection accuracy, figure of merit (FOM) and full width half maximum (FWHM), and it has been discussed with Refractive index of analyte 1.33, 1.35, 1.38 and 1.39. In this, we proposed a multilayer structure comprising nano films of Ag, Silicon, PtSe 2 for the early diagnosis of chikungunya virus. The suggested sensor structure consists of BK 7 (Borosilicate Crown) coupling prism over which the nano film of silver metal is present. The layer thicknesses and the number of PtSe 2 sheets are optimized for the high performance. At the operating wavelength of 633 nm, a Kretschmann based SPR sensor has been proposed which gives highest sensitivity of 287.3 Deg/RIU. The principal of attenuated total reflection has been employed for the performance analysis of the sensor.