Reflectionless sharp bends and corners in waveguides using epsilon-near-zero effects
Reflectionless sharp bends and corners in waveguides using epsilon-near-zero effects
Following our recent theoretical and experimental results that show how zero-permittivity metamaterials may provide anomalous tunneling and energy squeezing through ultranarrow waveguide channels, here we report an experimental investigation of the bending features relative to this counterintuitive resonant effect. We generate the required effectively zero permittivity using a waveguide operating …