Disposable and Flexible Electrochemical Paper-based Analytical Devices Using Low-cost Conductive Ink |
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Authors: | Wilson Tiago Fonseca Karla Ribeiro Castro Tássia Regina de Oliveira Ronaldo Censi Faria |
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Affiliation: | Department of Chemistry, Federal University of São Carlos, Rod. Washington Luís km 235 – SP-310, São Carlos, SP 13565–905 Brazil |
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Abstract: | In this work, a simple procedure for construction of disposable electrochemical paper-based analytical devices (ePADs) by screen-printing using low-cost materials and a home craft electronic printer is proposed. The devices were constructed using liner paper as a substrate and carbon ink prepared with graphite powder and wood glue. The ePAD was evaluated as an electrochemical sensor and biosensor. The proposed conductive carbon-based ink can be easily prepared and is an eco-friendly and non-toxic material. The developed ePAD was simple to produce and can be used as a low-cost electrochemical sensor, at less than US $0.20 per device. |
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Keywords: | electrochemical paper-based device disposable electrochemical cell electrochemical sensor carbon ink electroanalysis |
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