Split ring resonator sensors for infrared detection of single molecular monolayers

被引：221

作者：

Cubukcu, Ertugrul ^{[2
]}

Zhang, Shuang ^{[2
]}

Park, Yong-Shik ^{[2
]}

Bartal, Guy ^{[2
]}

Zhang, Xiang ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Nanoscale Sci & Engn Ctr, Berkeley, CA 94720 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 95卷 / 04期

基金：

美国国家卫生研究院;

关键词：

infrared detectors; monolayers; plasmonics; self-assembly; ENHANCED RAMAN-SCATTERING; SPECTROSCOPY; ANTENNAS; NANOPARTICLES; ABSORPTION;

D O I：

10.1063/1.3194154

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report a surface enhanced molecular detection technique with zeptomole sensitivity that relies on resonant coupling of plasmonic modes of split ring resonators and infrared vibrational modes of a self-assembled monolayer of octadecanthiol molecules. Large near-field enhancements at the gap of split ring resonators allow for this resonant coupling when the molecular absorption peaks overlap spectrally with the plasmonic resonance. Electromagnetic simulations support experimental findings.

引用

页数：3

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