Experimental and Theoretical Study of Optical Antennas Formed from ZnO Nanorods Coated with a Thin Silver Film

被引:4
作者
Kaidashev, E. M. [1 ]
Lerer, A. M. [1 ]
Golovacheva, E. V. [1 ]
Kaydashev, V. E. [1 ]
Lyanguzov, N. V. [1 ]
Tsvetyanskii, E. A. [1 ]
机构
[1] Southern Fed Univ, Rostov Na Donu 344006, Russia
关键词
ARRAYS; TRANSMISSION; GRATINGS; SURFACE; HOLES;
D O I
10.1134/S1064226917110055
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
A new design of an optical antenna formed from a ZnO nanorod coated with a thin metallic film is proposed. Arrays of ZnO nanorods coated with a thin silver film and highly oriented perpendicular to the substrate have been fabricated using carbothermal synthesis and magnetron sputtering. The problems of diffraction of electromagnetic waves by a single metal-dielectric nanooscillator located at the interface between dielectrics and on a 2D periodic array have been solved. Calculated electrodynamic characteristics of the optical nanoantennas of different lengths have been compared with experimental data. A new optical metal-dielectric diffraction grating absorbing almost 100% of the energy falling onto it at the resonance of the surface wave propagating along the metal (solid state plasma)/dielectric interface has been theoretically investigated.
引用
收藏
页码:1328 / 1335
页数:8
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