Spinning a split ring resonator with microwaves

Abstract

The aim of this study is to spin a Split Ring Resonator (SRR) with microwaves. Analytical and numerical studies show that an SRR can be spun when it is excited at its resonance frequency by a circularly polarized electromagnetic wave. Experimentally, using a cylindrical waveguide, at 2.45 GHz and for 150 W, a 15 mm-diameter SRR was rotated with an initial acceleration of the order of tens of °.s−2 and reached speeds of the order of 0.5 rps, performing several full rotations. As expected, a linear dependence of the initial acceleration as a function of the applied power is found. The limits and perspectives of this work are discussed.