Epsilon-Near-Zero (ENZ) Materials

Epsilon-Near-Zero (ENZ) materials are special substances whose electric permittivity (a measure of how they respond to electric fields) is close to zero at specific frequencies. This unique property allows electromagnetic waves, such as light, to pass through these materials with unusual behaviors—like uniform phase distribution or dramatic bending and shaping of light. ENZ materials enable advanced control over electromagnetic signals, useful in applications like super-compact lenses, cloaking devices, and efficient energy transmission, making them important in developing next-generation photonics and optical technologies.