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. 2019 Jul 3;14:4833–4847. doi: 10.2147/IJN.S208292

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© 2019 Chiu et al.

This work is published and licensed by Dove Medical Press Limited. The full terms of this license are available at https://www.dovepress.com/terms.php and incorporate the Creative Commons Attribution – Non Commercial (unported, v3.0) License (http://creativecommons.org/licenses/by-nc/3.0/). By accessing the work you hereby accept the Terms. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed. For permission for commercial use of this work, please see paragraphs 4.2 and 5 of our Terms (https://www.dovepress.com/terms.php).

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Cyclic voltammograms of bare Au, Au/Cys, Au/Cys/carboxyl-GO, and Au/Cys/carboxyl-GO/peptide chips at scan rates of (A) 10 mV/s and (B) 50 mV/s. (C) Cyclic voltammograms of the Au/Cys/carboxyl-GO/peptide chip with increases in scan rate from 10 to 50 mV/s. (D) The EIS spectra of the different sensing chips. (E) CV-SPR voltammograms of the different sensing chips at a potential scanning rate of 25 mV/s. (F) CV-SPR voltammograms of the Au/Cys/carboxyl-GO/peptide chip at different scan rates.

Abbreviations: Au, gold; Cys, cystamine; GO, graphene oxide; EIS, electrochemical impedance spectroscopy; CV, cyclic voltammetry; SPR, surface plasmon resonance.