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论文类型：期刊论文

发表时间：2016-04-01

发表刊物：JOURNAL OF MICROMECHANICS AND MICROENGINEERING

收录刊物：SCIE、EI

卷号：26

期号：4

ISSN号：0960-1317

关键字：electrohydrodynamic jet; printing; graphene; electrochemistry test

摘要：This paper reports the use of electrohydrodynamic jet (E-jet) printing technique for producing a wide range of graphene micro-scale structures. Ethyl cellulose-dispersed graphene ink and Nafion-dispersed graphene ink were prepared and used for E-Jet printing. A glass slide and PDMS substrate were used for E-Jet printing of graphene ink. The E-jet printed graphene micro-scale structures using ethyl cellulose-dispersed graphene ink presented a feature of center arrayed graphene surrounded by the track of evaporated solution. However, the E-Jet printed graphene structures using Nafion-dispersed graphene ink exhibited uniform arranged features. It was observed that the resistivity of the graphene structures printed from the ethyl cellulose-dispersed graphene ink was much lower than that from the Nafion-dispersed graphene ink. In addition, the graphene micro-scale electrodes were E-Jet printed for preliminary electrochemical applications. The results showed that the graphene micro-scale electrodes had a distinct response for the lead ion. Furthermore, a Pt/graphene composite electrode was formed and an electrochemistry test was conducted. It was found that the Pt/ graphene composite electrode had a more sensitive response compared with the pure Pt electrode for electrochemical sensing.