4.5 Article

Non-Enzymatic Electrochemical Detection of Glucose with a Gold Nanowire Array Electrode

Journal

ELECTROANALYSIS
Volume 26, Issue 3, Pages 656-663

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.201300565

Keywords

Glucose detection; Gold nanowires; Ion-beam etching; Non-enzymatic sensor; Holography photography; Vacuum sputtering-deposition

Funding

  1. National Basic Research Program of China (973) [2011CB933702]
  2. Shanghai Tongji Gao Tingyao Environmental Science & Technology Development Foundation (STGEF)
  3. Program for Changjiang Scholars
  4. Innovative Research Team in University of the Ministry of Education of China

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High-performance electrodes for in vivo electrochemical detection of glucose (GO) are highly desirable. In this work, we propose a new approach to efficiently and precisely prepare a Au nanowire array electrode (ANAE) with a line width of 78nm and a large sensor area of 60mmx60mm for GO detection. In this approach three techniques, i.e., vacuum sputtering-deposition, holography photolithography, and argon ion-beam etching, are integrated. The fabricated ANAE exhibits good performance for GO detection. A linear amperometric response to the oxidation of GO in a concentration range of 0.4-10mM is observed. The ANAE is characterized by its high detection sensitivity, selectivity, stability and good biocompatibility. All of these make it a promising tool for GO detection and other relevant applications.

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