Enhancing and suppressing radiation with some permeability-near-zero structures.
Using some special properties of a permeability-near-zero material, the radiation of a line current is greatly enhanced by choosing appropriately the dimension of a dielectric domain in which the source lies and that of a permeability-near-zero shell. The radiation of the source can also be completely suppressed by adding appropriately another dielectric domain or an arbitrary perfect electric conductor (PEC) inside the shell. Enhanced directive radiation is also demonstrated by adding a PEC substrate.
Jin
Yi
Y
Centre for Optical and Electromagnetic Research, State Key Laboratory of Modern Optical Instrumentations, Zhejiang University, Hangzhou 310058, China.
He
Sailing
S
D003198:Computer Simulation; D004553:Electric Conductivity; D004867:Equipment Design; D008420:Manufactured Materials; D049329:Nanostructures; D010539:Permeability; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation