HIGH-ORDER SURFACE PLASMONIC RESONANCE AND NEAR FIELD ENHANCEMENT IN ASYMMETRIC NANORING/ELLIPSOID DIMERS
Abstract
Optical properties of the asymmetric nanoring/ellipsoid dimers with breaking of geometric symmetry are investigated theoretically. A tunable high order surface plasmonic resonance is achieved. It is demonstrated that such high order resonances result from the plasmonic coupling between the modes of a nano-ellipsoid and of an asymmetric nanoring. Interestingly, a current loop is observed on the nanoellipsoid under coupling of the two nanostructures. The surface plasmonic resonance of this nanostructure can also produce enhanced local fields that can be applied in surface-enhanced spectroscopy and biosensing.
About the Authors
Zh. . Wang
Energy Engineering Institute, Yulin College
Russian Federation
Russian Federation
L. . Ren
Energy Engineering Institute, Yulin College
Russian Federation
Russian Federation
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Review
For citations:
Wang Zh., Ren L. HIGH-ORDER SURFACE PLASMONIC RESONANCE AND NEAR FIELD ENHANCEMENT IN ASYMMETRIC NANORING/ELLIPSOID DIMERS. Zhurnal Prikladnoii Spektroskopii. 2018;85(3):500-504. (In Russ.)
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