Introduction to Photonic/Sonic Crystals and Metamaterials (III) From Negative Refraction to Transformation Optics
2013-05-06 10:20 - 13:10
Room 103, Mathematics Research Center Building (ori. New Math. Bldg.)
Metamaterials are artificial media designed for electromagnetic waves or acoustic waves to exhibit their unusual propagating properties. These properties include negative refraction, subwavelength imaging, field enhancement, anisotropy, and strong chirality, etc. In this talk I will explain the underlying physics of metamaterials. Important concepts such as local resonance, anisotropy, procedure of averaging, and their roles in realizing metamaterial media will be discussed. The working principles of metamaterial devices such as superlens, hyperlens, and invisibility cloak will be explained. A brief introduction to acoustic metamaterials will also be given.