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we have experimentally shown that a conjugate matched ENG/MNG can work as a sub-wavelength resonator at tunneling frequency. While the tunneling modes need a certain time to achieve to steady state and the CT increases (nearly) exponentially with the thickness of the ENG/MNG bilayer. Under steady state, the waves in the single negative material are a hybrid of traveling wave and reactive standing wave, and the phase difference between the electric field and magnetic field varies with the position.

metamaterials