Plasmonic-based imaging of local square wave voltammetry.

Plasmonic-based imaging of local square wave voltammetry.
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DOI:
10.1021/ac201392r
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发表时间:
2011-10-01
影响因子:
7.4
通讯作者:
Tao, Nongjian
Tao, Nongjian
中科院分区:
化学1区
文献类型:
--
作者:
Shan, Xiaonan;Wang, Shaopeng;Wang, Wei;Tao, Nongjian

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方波伏安法(SWV)因其灵敏度高、对背景电流的有效抑制而被广泛应用于电化学分析和传感器中,但常规电化学检测方法的SWV不具有空间分辨率。我们在这里报告的等离子体激元的方法来成像本地SWV,这打开了大门,用于分析非均相电化学反应和高通量检测的微阵列。我们描述的基本原理,验证的原则,通过比较基于等离子体的SWV与传统方法获得的,并展示局部电化学分析的成像能力。
Square wave voltammetry (SWV) is widely used in electrochemical analysis and sensors because of its high sensitivity and efficient rejection of background current, but SWV by conventional electrochemical detection method does not provide spatial resolution. We report here a plasmonic method to image local SWV, which opens the door for analyzing heterogeneous electrochemical reactions and for high throughput detections of microarrays. We describe the basic principle, validate the principle by comparing the plasmonic-based SWV with those obtained with the conventional method, and demonstrate imaging capability for local electrochemical analysis.
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