Optics and Photonics Society of Iran

Applications of gas sensing can be found in industrial processes, detecting chemical hazards, environmental monitoring and medical diagnostics. Among different methods for gas sensing such as electrochemical, colorimetric, photo ionization detectors (PID), etc, Surface Plasmon Resonance (SPR) is a powerful analytical technique for monitoring interactions at a metal-dielectric interface. Very recently, magneto-optic effects and surface plasmon resonance (SPR) has been combined in order to enhance the sensitivity of gas sensors. For ethanol sensing TiO2 thin films are used as sensing layers with Au/Co/Au transducers. In this work we used TiO2 nanoparticles, as sensing layers with Au@Co@Au magnetoplasmonic system. Subsequently, we have a comparison between SPR and MOSPR performances.