Electromagnetic wave tunnelling and squeezing effects through 3D coaxial waveguide channel filled with ENZ material

A three dimensional coaxial metallic waveguide channel filled with ε-near-zero materials is computed using a full wave electromagnetic commercial simulator CST. Simulating predict that electromagnetic waves can be tunnelled and squeezed through the channel, and the incoming TEM wave front is replicated at the output interface, independently of the specific geometry of the channel. A novel ENZ material-related sensor is proposed, and the superior performance of the sensor have been validated.