Resonance Relation for Coated Spheres with Radial Anisotropy
In the long-wavelength limit,we establish the analytical resonance relation for coated rotationally uniaxial anisotropic spheres.We examine ranges of permissible constitutive parameters in conjunction with feasible radial ratios for two cases,one with a metallic shell and the other with a metallic core.In general,for the metallic shell case,an increase in core dielectric anisotropy leads to a larger permissible region constituted by both the shell permittivity and the core tangential permittivity for supporting localized surface plasmonic resonance(LSPR).A reverse trend is observed for having shell dielectric anisotropy.Furthermore,it is shown that for both above-mentioned arrangements,an increase in the order of LSPR results in a smaller permissible region.The derived relation serves as a design map of permissible values of the structural and material parameters,so that considerable time can be saved for future designs of resonant structures with radial anisotropy.
H.-Z.Liu K.Mouthaan M.S.Leong S.Zouhdi
National University of Singapore,Singapore;Laboratoire de Génie Electrique de Paris,LGEP-Supélec,Fra National University of Singapore,Singapore Laboratoire de Génie Electrique de Paris,LGEP-Supélec,France
国际会议
Progress in Electromagnetics Research Symposium 2011(2011年电磁学研究新进展学术研讨会)
苏州
英文
1215-1218
2011-09-01（万方平台首次上网日期，不代表论文的发表时间）