Antenna Sensing of Surface Phonon Polaritons

被引：57

作者：

Neubrech, Frank ^{[1
]}

Weber, Daniel ^{[1
]}

Enders, Dominik ^{[2
]}

Nagao, Tadaaki ^{[2
]}

Pucci, Annemarie ^{[1
]}

机构：

[1] Heidelberg Univ, Kirchhoff Inst Phys, D-69120 Heidelberg, Germany

[2] Natl Inst Mat Sci, World Premier Int Res Ctr Mat Nanoarchitecton, Tsukuba, Ibaraki 3050044, Japan

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 16期

关键词：

ENHANCED RAMAN-SCATTERING; ARRAYS; MODES;

D O I：

10.1021/jp908921y

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Resonant coupling between the plasmonic excitation of gold nanoantennas and phonon polaritons of a dielectric substrate-surface layer of about 3 nm thickness produces significant Fano-type signals from that layer in the infrared extinction spectrum of the fundamental antenna resonance. Compared to infrared transmittance spectra without gold antennas, the vibrational signal from the layer is about 1900 times enhanced and it is observed at surface phonon polariton frequencies of the layer, not at the transverse optical phonon frequency.

引用

页码：7299 / 7301

页数：3

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