Gu Chunhui, Su Dingkai, Jia Chuancheng, Ren Shizhao, Guo Xuefeng
Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University Beijing 100871 P. R. China
Department of Materials Science and Engineering, College of Engineering, Peking University Beijing 100871 P. R. China.
RSC Adv. 2018 Feb 12;8(13):6814-6819. doi: 10.1039/c7ra13106b. eCollection 2018 Feb 9.
Carbon nanoelectrodes with nanogap are reliable platforms for achieving ultra-small electronic devices. One of the main challenges in fabricating nanogapped carbon electrodes is precise control of the gap size. Herein, we put forward an electroburning approach for controllable fabrication of graphene nanoelectrodes from preprocessed nanoconstriction arrays. The electroburning behavior was investigated in detail, which revealed a dependence on the size of nanoconstriction units. The electroburnt nanoscale electrodes showed the capacity to build molecular devices. The methodology and mechanism presented in this study provide significant guidance for the fabrication of proper graphene and other carbon nanoelectrodes.
具有纳米间隙的碳纳米电极是实现超小型电子器件的可靠平台。制造纳米间隙碳电极的主要挑战之一是精确控制间隙尺寸。在此，我们提出了一种通过电烧蚀从预处理的纳米收缩阵列可控制备石墨烯纳米电极的方法。详细研究了电烧蚀行为，发现其与纳米收缩单元的尺寸有关。电烧蚀后的纳米级电极显示出构建分子器件的能力。本研究中提出的方法和机制为制备合适的石墨烯及其他碳纳米电极提供了重要指导。
