Gap Plasmon Resonance in a Suspended Plasmonic Nanowire Coupled to a Metallic Substrate

被引：32

作者：

Miyata, Masashi ^{[1
]}

Holsteen, Aaron ^{[2
]}

Nagasaki, Yusuke ^{[1
]}

Brongersma, Mark L. ^{[2
]}

Takahara, Junichi ^{[1
,3
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Suita, Osaka 5650871, Japan

[2] Stanford Univ, Geballe Lab Adv Mat, Stanford, CA 94305 USA

[3] Osaka Univ, Adv Photon Res Ctr, Suita, Osaka 5650871, Japan

来源：

NANO LETTERS | 2015年 / 15卷 / 08期

基金：

日本学术振兴会;

关键词：

gap plasmon; nanowire; optical antenna; Fabry-Perot resonance; Fano resonance; pick-and-place method; BOWTIE NANOANTENNA; FIELD ENHANCEMENT; FANO RESONANCE; WAVE-GUIDE; FILM; NANOSTRUCTURES; NANOPARTICLE; ANTENNAS; METAMATERIALS; SPECTROSCOPY;

D O I：

10.1021/acs.nanolett.5b02307

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We present an experimental demonstration of nanoscale gap plasmon resonators that consist of an individual suspended plasmonic nanowire (NW) over a metallic substrate. Our study demonstrates that the NW supports strong gap plasmon resonances of various gap sizes including single-nanometer-scale gaps. The obtained resonance features agree well with intuitive resonance models for near- and far-field regimes. We also illustrate that our suspended NW geometry is capable of constructing plasmonic coupled systems dominated by quasi-electrostatics.

引用

页码：5609 / 5616

页数：8

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