Title :
Metasurfaces designed by coordinate transformations
Author :
Martini, Enrica ; Maci, Stefano
Author_Institution :
Dept. of Inf. Eng. & Math. Sci., Univ. of Siena, Siena, Italy
Abstract :
Metasurfaces are thin metamaterial layers characterized by unusual reflection properties of plane waves and/or dispersion properties of surface/guided waves. Properly modulated metasurfaces can be used to transform an incoming surface wave field into a different wavefield configuration with desired properties. This work proposes a systematic approach to design a large number of metasurface-based devices based on a metasurface transformation theory. This approach represents an extension of the Transformation Optics method to control the wavefront of surface waves through the use of modulated metasurfaces.
Keywords :
adaptive optics; electromagnetic metamaterials; electromagnetic wave propagation; electromagnetic wave reflection; coordinate transformations; dispersion properties; guided waves; metamaterial layers; metasurface transformation theory; metasurface-based devices; plane waves; surface wave field; transformation optics method; unusual reflection properties; wavefield configuration; wavefront control; Antennas; Impedance; Metamaterials; Optical surface waves; Surface impedance; Surface waves; Tensile stress;
Conference_Titel :
Electromagnetic Theory (EMTS), Proceedings of 2013 URSI International Symposium on
Conference_Location :
Hiroshima
Print_ISBN :
978-1-4673-4939-0
