TY - GEN
T1 - Macroscopic Nonlocality Makes Dielectric Slabs Omniderctionally Transparent via Printed-Circuit-Board- (PCB-) Compatible Electrically Polarizable Coatings
AU - Shaham, A.
AU - Epstein, A.
N1 - Publisher Copyright: © 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - We present a rigorous scheme to render planar dielectric slabs omnidirectionally transparent by coating them with adequately engineered simple electrical impedance sheets compatible with standard printed-circuit-board (PCB) technology. In contrast to cylindrical or spherical cloaks, which practice angular stability via symmetry, our approach leverages macroscopic nonlocality to defy the intrinsic spatial dispersion of Fresnel reflection due to planar slabs. To this end, we analytically invoke the generalized Huygens' condition derived in our previous work to tune these coatings; we thus accomplish a composite of extremely low reflectance and, importantly, desired angular behavior of the transmission phase that mimics free-space propagation over all the range of incident angles and preserves wavefronts. Verified via full-wave simulations, these results are expected to facilitate efficient radomes for wide-angle beam-scanning applications and novel optical elements of extreme nonlocality and low reflectance.
AB - We present a rigorous scheme to render planar dielectric slabs omnidirectionally transparent by coating them with adequately engineered simple electrical impedance sheets compatible with standard printed-circuit-board (PCB) technology. In contrast to cylindrical or spherical cloaks, which practice angular stability via symmetry, our approach leverages macroscopic nonlocality to defy the intrinsic spatial dispersion of Fresnel reflection due to planar slabs. To this end, we analytically invoke the generalized Huygens' condition derived in our previous work to tune these coatings; we thus accomplish a composite of extremely low reflectance and, importantly, desired angular behavior of the transmission phase that mimics free-space propagation over all the range of incident angles and preserves wavefronts. Verified via full-wave simulations, these results are expected to facilitate efficient radomes for wide-angle beam-scanning applications and novel optical elements of extreme nonlocality and low reflectance.
UR - http://www.scopus.com/inward/record.url?scp=85177569641&partnerID=8YFLogxK
U2 - https://doi.org/10.1109/Metamaterials58257.2023.10289159
DO - https://doi.org/10.1109/Metamaterials58257.2023.10289159
M3 - منشور من مؤتمر
T3 - 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
SP - 344
EP - 346
BT - 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
T2 - 17th International Congress on Artificial Materials for Novel Wave Phenomena, Metamaterials 2023
Y2 - 11 September 2023 through 16 September 2023
ER -