Metamaterial is a special kind of artificial composite materials or structures. Through orderly design the key physical size of the structure, we can design our own "atoms" to create the special material with unprecedented effective properties that have not yet been found in nature. Metamaterial like left-hand materials and photonic crystal have a wide range of applications in military and civil field. This paper reviewed the research progress and application of metamaterial.

metamaterial  /  left-hand materials  /  photonic crystal