Imaging Local Electrochemical Current via Surface Plasmon Resonance

被引：288

作者：

Shan, Xiaonan ^{[1
,2
]}

Patel, Urmez ^{[1
]}

Wang, Shaopeng ^{[1
]}

Iglesias, Rodrigo ^{[1
]}

Tao, Nongjian ^{[1
,2
]}

机构：

[1] Arizona State Univ, Biodesign Inst, Ctr Bioelect & Biosensors, Tempe, AZ 85287 USA

[2] Arizona State Univ, Dept Elect Engn, Tempe, AZ 85287 USA

来源：

SCIENCE | 2010年 / 327卷 / 5971期

关键词：

ULTRATHIN ORGANIC FILMS; MICROSCOPY;

D O I：

10.1126/science.1186476

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We demonstrated an electrochemical microscopy technique based on the detection of variations in local electrochemical current from optical signals arising from surface plasmon resonance. It enables local electrochemical measurements (such as voltammetry and amperometry) with high spatial resolution and sensitivity, because the signal varies with current density rather than current. The imaging technique is noninvasive, scanning-free, and fast, and it constitutes a powerful tool for studying heterogeneous surface reactions and for analyzing trace chemicals.

引用

页码：1363 / 1366

页数：4

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