Polarizabilities and Effective Parameters for Collections of Spherical Nano-Particles Formed by Pairs of Concentric Double-Negative (DNG), Single-Negative (SNG) and/or Double-Positive (DPS) Metamaterial Layers

摘要

Unusual scattering effects from tiny spherical particles may be obtained whenconcentric shells are designed by pairing together 'complementary'double-negative (DNG), single-negative (SNG), and/or standard double-positive(DPS) materials. By embedding these highly polarizable scatterers in a hostmedium one can achieve a bulk medium with interesting effective parameters.Some physical insights and justifications for the anomalous polarizability ofthese concentric spherical nano-particles and the effective parameters of thebulk composite medium are discussed.