Nanowire-templated microelectrodes for high-sensitivity pH detection

被引：28

作者：

Antohe, Vlad Andrei ^{[1
]}

Radu, Adrian ^{[2
]}

Matefi-Tempfli, Maria ^{[1
]}

Attout, Anne ^{[1
]}

Yunus, Sami ^{[1
]}

Bertrand, Patrick ^{[1
]}

Dutu, Constantin Augustin ^{[3
]}

Vlad, Alexandru ^{[3
]}

Melinte, Sorin ^{[3
]}

Matefi-Tempfli, Stefan ^{[1
]}

Piraux, Luc ^{[1
]}

机构：

[1] Univ Catholique Louvain, Unite Phys Chim & Phys Mat, B-1348 Louvain, Belgium

[2] Univ Bucharest, Dept Mat & Elect & Optoelect Devices, Bucharest 077125, Romania

[3] Univ Catholique Louvain, Unite Dispositifs Integres & Circuits Elect, B-1348 Louvain, Belgium

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 07期

关键词：

electrochemical sensors; microelectrodes; nanowires; photolithography; polymers; transducers; ELECTROLESS DEPOSITION; POLYANILINE FILMS; IMPEDANCE; BIOSENSOR;

D O I：

10.1063/1.3089227

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A highly sensitive pH capacitive sensor has been designed by confined growth of vertically aligned nanowire arrays on interdigited microelectrodes. The active surface of the device has been functionalized with an electrochemical pH transducer (polyaniline). We easily tune the device features by combining lithographic techniques with electrochemical synthesis. The reported electrical LC resonance measurements show considerable sensitivity enhancement compared to conventional capacitive pH sensors realized with microfabricated interdigited electrodes. The sensitivity can be easily improved by changing only the thickness of the functional layer.

引用

页数：3

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