Supercapacitive admittance tomoscopy

被引：23

作者：

Gamby, J ^{[1
]}

Abid, JP ^{[1
]}

Girault, HH ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Electrochim Phys & Analyt, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2005年 / 127卷 / 38期

关键词：

D O I：

10.1021/ja050602o

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A sensor for measuring adsorption on a substrate has been designed including a contactless detection scheme, called supercapacitive admittance tomoscopy (SCAT). The sensor comprises a thin dielectric layer with two parallel band electrodes on the one side and a chemically modified surface on the other onto which the adsorption of molecules occurs. Upon application of a high frequency ac voltage between the two electrodes, a capacitive coupling is established across the dielectric layer, and the admittance measured depends on the surface state of the chemically modified interface. On the basis of this principle, a flow sensor has been developed to measure sensorgrams to follow the dynamics of the adsorption and has been tested for the adsorption of IgG on the modified surface.

引用

页码：13300 / 13304

页数：5

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