ABSTRACT
The innovation of metamaterials opened wide the door for further development of fascinating science and engineering in the field of electromagnetics. This chapter shows that one of the extraordinary applications of metamaterials: utilizing hyper-lens, a metamaterial with permittivities in opposite signs in two orthogonal directions of cylindrical coordinates, to overcome the resolution limit of optical imaging. It presents a detailed report on the first experimental hyperlens imaging. Since the main goal of the experiment was to prove the concept of hyperlensing, a known object is fabricated in a hyperlens/object combination sample. A hyperlens utilizes unusual characteristic of an anisotropic metamaterial to carry large wave vectors into the far field. Concentric multilayers of metal and dielectrics make up this metamaterial structure and the first working hyperlens was fabricated and tested. Hyperlensing requires no postimaging processes and is a direct far-field imaging technique.
