Experimental realization of electromagnetic toroidal excitation for microwave applications

Author:

Sarin, V. P.  Vinesh, P. V.  Manoj, Mani  Chandroth, Aanandan  Pezholil, Mohanan  Kesavath, Vasudevan  

Journal:

SN APPLIED SCIENCES

Issue Date:

2019

Abstract(summary):

An experimental realization of resonant toroidal dipole excitation in the microwave regime is presented in this paper. The metasurface proposed herewith is an asymmetric double split-ring resonator exhibiting Fano-like resonance profile. One could observe that cascading the metasurface results in near-field transverse and longitudinal coupling creating dual-band toroidal moments on the structure. This planar scheme will simulate the development of enhanced light-matter interaction, electromagnetic wave slowdown and sensor design. Here we report the experimental realization of the phenomenon in the S-band frequencies, and the results are verified using multipole scattering analysis.