Yang C.-H.Chen C.-W.Lin Y.-K.Yeh Y.-C.Hsu C.-C.Fan Y.-J.Yu I.-S.JIAN-ZHANG CHEN2019-09-262019-09-26201700134651https://scholars.lib.ntu.edu.tw/handle/123456789/425313This paper reports prototype atmospheric-pressure plasma jet (APPJ)-processed reduced graphene oxide (rGO)-modified carbon electrochemical sensors integrated with 3D-printed microfluidic channels. Dopamine (DA) solutions with various concentrations are used for the model test. The APPJ-calcined rGO coating significantly enhances the electrochemical signal for DA detection by 18 times. X-ray photoelectron spectroscopy (XPS) shows that APPJ-calcined rGO-modified carbon electrodes have more oxygen-containing surface functional groups, leading to the enhanced electrochemical reactivity. The cyclic voltammetry (CV) curves of solutions with various DA concentrations are well-distinguishable in the presence of uric acid (UA) and ascorbic acid (AA) as interfering agents. ? 2017 The Electrochemical Society. All rights reserved.journal article10.1149/2.0901712jes2-s2.0-85032623162WOS:000415283600084https://www2.scopus.com/inward/record.uri?eid=2-s2.0-85032623162&doi=10.1149%2f2.0901712jes&partnerID=40&md5=ff49a94173af91b8c062f35a82118ff0