Elhefnawy, Mohamed, KyoungHun Kim, Tae-Hyeon Kim, and Wang-Sang Lee. “A Low Profile Polarization-Insensitive Multiple-Band Metamaterial Absorber Using a Slotted Octagonal Unit Cell”. Applied Computational Electromagnetics Society Journal (ACES) 39, no. 05 (May 31, 2024): 440–451. Accessed July 10, 2026. https://journals.riverpublishers.com/index.php/ACES/article/view/25287.