Title :
Electromagnetic energy in negative index materials
Author :
Shivanand ; Webb, Kevin J.
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
An exact separation of both electric and magnetic energies into stored and lost energies is shown to be possible in the special case when the wave impedance is independent of frequency. Using an example metamaterial response that provides a negative refractive index, it is shown that negative time-averaged stored energy can occur, with total energy that remains positive.
Keywords :
electromagnetic wave propagation; metamaterials; refractive index; electric energy; electromagnetic energy; metamaterial response; negative index material; negative time-averaged stored energy; refractive index; wave impedance; Dispersion; Magnetic domains; Magnetic resonance; Magnetic separation; Materials;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6348090
