Polarization Dependence of Plasmonic Nanotoroid Dimer Antenna

被引：10
作者：
El-Shenawee, Magda O. [1 ]
机构：
[1] Univ Arkansas, Dept Elect Engn, Fayetteville, AR 72701 USA
来源：
IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2010年 / 9卷
基金：
美国国家科学基金会;
关键词：
Gold optical properties; nanotoroid dimer antenna; optical antennas; plasmonic antennas; polarization; OPTICAL-CONSTANTS; NANOPARTICLES;
D O I：
10.1109/LAWP.2010.2050853
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：
The surface Plasmon resonance of nanotoroid dimer antenna immersed in air is investigated. The method-of-moments surface integral equation is employed to compute the resonance wavelength and the enhanced electric field of the nanoantenna. The results show that the size of the gap causes redshift to the resonance wavelength of the dominant mode only when the incident polarization is parallel to the axis of the dimer. The dominant mode is a symmetric mode, and the higher order mode is a combination of symmetric and antisymmetric modes.
引用
收藏
页码：463 / 466
页数：4
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