Improved Sensitivity of Metamaterial based SPR Biosensor using Zinc Oxide

This work evaluates sensitivity, detection accuracy and quality factor of metamaterial based biosensor using zinc oxide (ZnO). Performance of proposed metamaterial based SPR biosensor is also compared with conventional SPR sensor and proposed SPR biosensor without ZnO. Highest sensitivity of 401.4 Degree/RIU is obtained for proposed SPR biosensor with compromise of detection accuracy and quality factor. Total attenuated reflection (ATR) method has been utilized to plot reflectance curves. Multilayer modeling is used to calculate reflectivity with the help of MATLAB software. Use of ZnO improves the sensitivity of metamaterial based SPR for sensing of biomolecules. Thus use of ZnO in proposed SPR biosensor can detect biomolecules with improved sensitivity.