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. 2018 Mar 22;13(3):e0194157. doi: 10.1371/journal.pone.0194157

Fig 2. Electrochemical characterization of the paper-based sensors.

Fig 2

Evaluation of electrochemical sensor performance by (a) cyclic voltammograms (CV) at various scan rates in ferri/ferrocyanide. (b) The extracted peak currents are linearly proportional with the square roots of the scan rates denoting a quasi-reversible system suitable for analyte quantification. Measurements are conducted against the reference electrode.