Near-field polarization effects in molecular-motion-induced photochemical imaging

被引：41

作者：

Hubert, Christophe ^{[1
]}

Bachelot, Renaud ^{[1
]}

Plain, Jerome ^{[1
]}

Kostcheev, Sergei ^{[1
]}

Lerondel, Gilles ^{[1
]}

Juan, Mathieu ^{[1
]}

Royer, Pascal ^{[1
]}

Zou, Shengli ^{[2
]}

Schatz, George C. ^{[3
]}

Wiederrecht, Gary P. ^{[4
,5
]}

Gray, Stephen K. ^{[4
,5
]}

机构：

[1] Univ Technol Troyes, Lab Nanotechnol & Instrumentat Opt, Inst Charles Delaunay, CNRS,FRE 2848, F-10000 Troyes, France

[2] Univ Cent Florida, Dept Chem, Orlando, FL 32816 USA

[3] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

[4] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA

[5] Argonne Natl Lab, Chem Sci & Engn Div, Argonne, IL 60439 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2008年 / 112卷 / 11期

关键词：

D O I：

10.1021/jp7096263

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：

We demonstrate near-field polarization-sensitive photochemical imaging of the optical near fields produced by metal nanostructures under a variety of illumination conditions. The method relies on the optically induced vectorial molecular mass transport of a light-sensitive polymer. The experimental and theoretical results clearly show that this method can map the three spatial components of the optical near field of complex metal nanostructures. The method was applied to map the electromagnetic near field of silver bowtie nanostructures. In particular, we find that longitudinally polarized plasmons are confined at the top of the metallic structures. Furthermore, the intricate optical near fields in the polymer lead to molecular trapping regions at intensity minima.

引用

页码：4111 / 4116

页数：6

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