Abstract:
A tunable planar metamaterial with a high contribution of the toroidal dipole moment in the microwave range is theoretically and experimentally studied. The properties of such a structure are controlled by switching on a PiN diode. It is demonstrated that the metamaterial can be transparent or reflective, depending on the resistance of the PiN diode. Such a metamaterial is relevant for a wide range of applications, for example, for reducing the radar signature, suppressing scattering, and creating highly sensitive sensors and electromagnetic field sensors.
The experimental part of this work was supported by the Russian Foundation for Basic Research, project no. 20-32-90153, and the work on multipole expansion and modeling was supported by the Russian Science Foundation, project no. 21-19-00138.
Citation:
I. V. Stenishchev, M. V. Kozhokar', V. I. Chuguevsky, A. A. Basharin, “Multipole effects in a toroidal tunable planar metamaterial”, Pis'ma v Zh. Èksper. Teoret. Fiz., 114:12 (2021), 833–837; JETP Letters, 114:12 (2021), 771–775