Title :
Reconfigurable angle selective emitters in the near-IR based on phase change materials
Author :
Bossard, Jeremy A. ; Turpin, Jeremiah P. ; Werner, Douglas H.
Author_Institution :
Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA
Abstract :
Metamaterials have been previously studied for their ability to tailor the IR emissivity dispersion, pattern, and polarization of a surface. Here, we investigate a reconfigurable metamaterial structure based on dielectric resonators composed of phase-change material for use as near-IR emitters with custom angle selectivity. A genetic algorithm is successfully employed to optimize the metamaterial structures to have minimum emissivity in the normal direction and high emissivity at desired off-normal angles specified by the designer.
Keywords :
dielectric resonators; emissivity; light polarisation; optical dispersion; optical metamaterials; optical resonators; phase change materials; IR emissivity dispersion; dielectric resonators; metamaterial structures; near-IR emitters; off-normal angles; phase change materials; reconfigurable angle selective emitters; reconfigurable metamaterial structure; surface polarization; Dielectrics; Iron; Metamaterials; Surface waves; Three-dimensional displays;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5315-1
DOI :
10.1109/APS.2013.6710732
