@ARTICLE{Adhikari_Rammani_A_2021, author={Adhikari, Rammani and Chauhan, Diksha and Mola, Genene T. and Dwivedi, Ram P.}, volume={29}, number={4}, journal={Opto-Electronics Review}, pages={148-166}, howpublished={online}, year={2021}, publisher={Polish Academy of Sciences (under the auspices of the Committee on Electronics and Telecommunication) and Association of Polish Electrical Engineers in cooperation with Military University of Technology}, abstract={Fano resonance is an optical effect that emerges from the coherent coupling and interference (constructive and destructive) between the continuous state (background process) and the Lorentzian state (resonant process) in the plasmonic waveguide-resonator system. This effect has been used in the applications like optical sensors. These sensors are extensively used in sensing biochemicals and gases by the measurement of refractive index changes as they offer high sensitivity and ultra-high figure of merit. Herein, we surveyed several plasmonic Fano sensors with different geometries composed of metal-insulator-metal waveguide(s). First, the resonators are categorized based on different architectures. The materials and methods adopted for these designs are precisely surveyed and presented. The performances are compared depending upon the characterization parameters like sensitivity and figure of merit. Finally, based on the survey of very recent models, the advances and challenges of refractive index sensing deployed on Fano resonances are discussed.}, type={Reviews}, title={A review of the current state-of-the-art in Fano resonance-based plasmonic metal-insulator-metal waveguides for sensing applications}, URL={http://ochroma.man.poznan.pl/Content/121515/PDF/OPELRE_2021_29_4_R_Adhikari.pdf}, doi={10.24425/opelre.2021.139601}, keywords={coupled resonator, Fano resonance, finite element method, plasmonic nanosensor, sensitivity, waveguide}, }