Modeling of the pernicious chemical sensor in the terahertz regime

Several chemicals are dangerously injurious to the breathing system of human being and so, the exact diagnosis of the pernicious chemicals is essential. Therefore, we present a PCF sensor to detect these pernicious chemicals such as Sarin, Soman, Tabun and in this work, Zeonex is considered as bulk material. The COMSOL Multiphysics V-5.5 is used to design and analysis of the sensor model and the investigation of the proposed sensor’s performance is accomplished by shifting the terahertz frequency. We have found that relatively enhanced sensitivity (almost 90.93%, 92.39%, and 94.12 % for Sarin, Soman, and Tabun at 2.5 THz) with negligible light confinement loss (around 1.043e×10^-14 cm^-1, 7.62×10⁻¹⁵ cm⁻¹, and 6.15×10^-15 cm^-1 for Sarin, Soman, and Tabun at 2.5 THz) is achieved by the sensor which the foremost requirement to provide the best performance by any biosensor or chemical sensor. Besides, the existing modern fabrication technologies can be applied to fabricate the sensor.