@article{agrawal_misra_2021,  title={Angle of Incidence and Polarization Insensitive Ultra-Thin Ultra Wide-Band Metamaterial Absorber based on Novel Non-Linearity in Unit Cell Design},  volume={20},  ISSN={2179-1074},  url={https://doi.org/10.1590/2179-10742021v20i31207},  DOI={10.1590/2179-10742021v20i31207},  number={3},  journal={Journal of Microwaves, Optoelectronics and Electromagnetic Applications},  publisher={Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo},  author={Agrawal, Alkesh and Misra, Mukul},  year={2021},  month={Sep},  pages={556–569} }