Metal-insulator-metal nanorod arrays for subwavelength imaging

被引：20
|
作者：
Wu, Xiaofei
Zhang, Jiasen [1 ]
Gong, Qihuang
机构：
[1] Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China
来源：
OPTICS EXPRESS | 2009年 / 17卷 / 04期
基金：
中国国家自然科学基金;
关键词：
OPTICAL HYPERLENS; SUPERLENS; MODES;
D O I：
10.1364/OE.17.002818
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We proposed using metal-insulator-metal (MIM) nanorod arrays for subwavelength imaging to improve the resolution based on the notable ability of field confinement of the MIM nanorods. The field distribution of a single Au-SiO2-Au nanorod, coupling between two nanorods and image transfer of shaped dipole sources through nanorod arrays were investigated by using the finite-difference time-domain method and compared with the case of Au nanorods. A resolution limit of similar to lambda/20 of the Au-SiO2-Au nanorod array was obtained, which is several times higher than that of the Au nanorod array. (c) 2009 Optical Society of America
引用
收藏
页码：2818 / 2825
页数：8
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