Dispersive Ground Plane Core-Shell Type Optical Monopole Antennas Fabricated with Electron Beam Induced Deposition

被引：18

作者：

Acar, Hakki ^{[1
]}

Coenen, Toon ^{[1
]}

Polman, Albert ^{[1
]}

Kuipers, Laurens Kobus ^{[1
]}

机构：

[1] FOM, Ctr Nanophoton, NL-1098 XG Amsterdam, Netherlands

来源：

ACS NANO | 2012年 / 6卷 / 09期

关键词：

core-shell nanoantenna; EBID; angle-resolved cathodoluminescence; SCATTERING; NANOANTENNAS; EMISSION;

D O I：

10.1021/nn302907j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present the bottom-up fabrication of dispersive silica core, gold cladding ground plane optical nanoantennas. The structures are made by a combination of electron-beam induced deposition of silica and sputtering of gold. The antenna lengths range from 300 to 2100 nm with size aspect ratios as large as 20. The angular emission patterns of the nanoantennas are measured with angle-resolved cathodoluminescence spectroscopy and compared with finite-element methods. Good overall correspondence between the the measured and calculated trends is observed. The dispersive nature of these plasmonic monopole antennas makes their radiation profile highly tunable.

引用

页码：8226 / 8232

页数：7

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