We investigate an anomalous scattering phenomenon exhibited by a lossless system based on metasurfaces. Electromagnetic energy is neither reflected nor transmitted but stored within the system to be available again at a different time. We analytically derive the proper excitation conditions and verify the response of the system through a proper set of full-wave simulations, demonstrating the key role of the metasurface in enabling such a zero-scattering condition. The practical feasibility and the opportunities offered by the proposed metasurface-based system may open the door to the design of virtual absorbers with dynamic properties in energy absorbing, storing, and releasing.
Marini, A., Ramaccia, D., Toscano, A., Bilotti, F. (2020). Metasurface-bounded open cavities supporting virtual absorption: free-space energy accumulation in lossless systems. OPTICS LETTERS, 45(11), 3147 [10.1364/OL.389389].
Metasurface-bounded open cavities supporting virtual absorption: free-space energy accumulation in lossless systems
Marini, A.;Ramaccia, D.;Toscano, A.;Bilotti, F.
2020-01-01
Abstract
We investigate an anomalous scattering phenomenon exhibited by a lossless system based on metasurfaces. Electromagnetic energy is neither reflected nor transmitted but stored within the system to be available again at a different time. We analytically derive the proper excitation conditions and verify the response of the system through a proper set of full-wave simulations, demonstrating the key role of the metasurface in enabling such a zero-scattering condition. The practical feasibility and the opportunities offered by the proposed metasurface-based system may open the door to the design of virtual absorbers with dynamic properties in energy absorbing, storing, and releasing.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
