A Compact Microelectrode Array Chip with Multiple Measuring Sites for Electrochemical Applications

Sensors

Maria Dimaki²  Marco Vergani¹  Arto Heiskanen²  Dorota Kwasny²  Luigi Sasso²  Marco Carminati¹  Juliet A. Gerrard³  Jenny Emneus² 

[1] Dipartimento di Elettronica e Informazione, Politecnico di Milano, Piazza Leonardo da Vinci 32, I-20133 Milano, Italy; E-Mails:;DTU Nanotech, Technical University of Denmark, Oersteds Plads, Bldg 345E, 2800 Kgs. Lyngby, Denmark; E-Mails:;The MacDiarmid Institute for Advanced Materials and Nanotechnology, Biomolecular Interaction Centre, School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch 8140, New Zealand; E-Mails:

关键词: microfabrication;    lift-off ears;    electrochemical applications;    multiple measuring sites;   

DOI  :  10.3390/s140609505

来源: mdpi

【 摘 要 】

In this paper we demonstrate the fabrication and electrochemical characterization of a microchip with 12 identical but individually addressable electrochemical measuring sites, each consisting of a set of interdigitated electrodes acting as a working electrode as well as two circular electrodes functioning as a counter and reference electrode in close proximity. The electrodes are made of gold on a silicon oxide substrate and are passivated by a silicon nitride membrane. A method for avoiding the creation of high edges at the electrodes (known as lift-off ears) is presented. The microchip design is highly symmetric to accommodate easy electronic integration and provides space for microfluidic inlets and outlets for integrated custom-made microfluidic systems on top.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.