Large Rectification Effect of Single Graphene Nanopore Supported by PET Membrane

• DOI: 10.1021/acsami.6b16736
• Publication Date: 2017-03-06T12:23:26Z
• Authors: Huijun Yao; Jian Zeng; Pengfei Zhai; Zongzhen Li; Yaxiong Cheng; Jiande Liu; Dan Mo; Jinglai Duan; Lanxi Wang; Youmei Sun; Jie Liu
• Keywords: Nanopore

Graphene is an ideal candidate for the development of solid state nanopores due to its thickness at atomic scale and high chemical mechanical stabilities. A facile method was adopted prepare single graphene nanopore supported by PET membrane (G/PET nanopore) within three steps assisted swift heavy ion irradiation asymmetric etching technology. The inversion rectification effect confirmed in G/PET while comparing with bare KCl electrolyte solution. By modifying wall charge conical hydrochloric acid from negative positive, found be greatly enhanced large ratio up 190 obtained during this work. Moreover, ionic flux separation efficiency also observed system. "on" "off" conductance immersed solution pH value lower than isoelectric point etched (IEP, = 3.8), voltage dependence off established it that strongly dependent on particularly low higher applied voltage.