One of the hottest area in recent years is metamaterial. With using assemblies of multiple elements fashioned from composite materials such as metals or plastics.It has novel design concept ,the basis of it's idea  is to overcome the limitations of some apparent natural laws by designing on a variety of physical structures in order to obtain extraordinary  material functions.The design concept of meta materials shows that people artificially acquire 'new substances' with very different physical properties from those in nature without breaking the basic laws of physics, and bring the design and development of functional materials into a new area. [2]