Centimeter-Long and Large-Scale Micropatterns of Reduced Graphene Oxide Films: Fabrication and Sensing Applications

详细信息    查看全文

• 作者：Qiyuan He ; Herry Gunadi Sudibya ; Zongyou Yin ; Shixin Wu ; Hai Li ; Freddy Boey ; Wei Huang ; Peng Chen ; Hua Zhang
• 刊名：ACS Nano
• 出版年：2010
• 出版时间：June 22, 2010
• 年：2010
• 卷：4
• 期：6
• 页码：3201-3208
• 全文大小：470K
• 年卷期：0
• ISSN：1936-086X

文摘

Recently, the field-effect transistors (FETs) with graphene as the conducting channels have been used as a promising chemical and biological sensors. However, the lack of low cost and reliable and large-scale preparation of graphene films limits their applications. In this contribution, we report the fabrication of centimeter-long, ultrathin (1−3 nm), and electrically continuous micropatterns of highly uniform parallel arrays of reduced graphene oxide (rGO) films on various substrates including the flexible polyethylene terephthalate (PET) films by using the micromolding in capillary method. Compared to other methods for the fabrication of graphene patterns, our method is fast, facile, and substrate independent. In addition, we demonstrate that the nanoelectronic FETs based on our rGO patterns are able to label-freely detect the hormonal catecholamine molecules and their dynamic secretion from living cells.