Biosensor Based on One-Dimensional Photonic Crystal for Poliovirus Detection

Abstract

Poliovirus (PV) is a highly contagious disease that can affect the nervous system causing muscle weakness and paralysis. The eradication of virus is very important for public health and economic growth of the country. The frequent testing of water is required to prevent the risk of infection. A biophotonic sensor based on one-dimensional photonic crystal has been proposed for the detection of poliovirus in environmental water. Transfer matrix method is used to investigate the transmission spectra of a multilayered crystal designed as (AB)5/D/(AB)5. AlN is used as higher refractive index material, and air is used as low refractive index medium. Here, defect layer is taken as water sample contaminated with poliovirus. The transmission spectra exhibit resonant peak within the photonic band gap which depends on concentration of virus. The proposed sensor is designed to work at wavelength of 260 nm. The sensor has a sensitivity and quality factor of 110.34 nm/RIU and ~2.4 × 104, respectively. Proposed structure can be useful in early detection of virus in water and to prevent transmission in humans.