期刊论文

Wang, Dazhi

Ren, Tongqun,Wang, Xiaodong,Zha, Wen,Feng, Li,Ma, Qian,Liu, Xianming,Yang, Ning,Xu, Zheng,Zhao, Xiaojun,Liang, Junsheng

2016-04-01

JOURNAL OF MICROMECHANICS AND MICROENGINEERING

SCIE、EI

J

26

4

0960-1317

electrohydrodynamic jet; printing; graphene; electrochemistry test

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.