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We studied plasmonic dipole, quadrupole, and sextupole modes of Ag nanoshell (NS) excited by a pair of aligned radial electric dipoles (bi-dipole) in symmetric and antisymmetric configurations by using dyadic Green’s functions. The mutual excitation rate and the radiative and nonradiative powers of bi-dipole in the presence of Ag NS were analyzed. Our results show that these modes are in accordance...
The far-field and near-field responses of Au/Ag nanoshell (NS) irradiated by a plane wave are studied theoretically using the Mie theory. The locally enhanced electric fields at the plasmon modes of NS are shown useful to excite a pair of nearby quantum dots (QDs) simultaneously. The dipole mode can be utilized for inducing an anti-symmetric radial bi-dipole and the quadrupole mode for the symmetric...
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