用荷能重离子径迹刻蚀的方法在高分子多聚物膜(PET)上制备出单锥形纳米孔.刻蚀过程通过监测跨膜电流来控制,最大刻蚀电流Imax不同,得到的锥形孔小孔孔径也不同.研究单锥形纳米孔在KCl溶液中的I-V曲线发现,单锥形纳米孔的离子传导呈现出不对称特性,该现象称为整流效应,整流系数γ大小随纳米小孔孔径大小和电解质溶液浓度而变化. Single-taper nanopore was prepared on polymeric polymer film (PET) by charge-energy ion beam etching.The etching process was controlled by monitoring the transmembrane current and the maximum etching current Imax was different The pore size of the conical pore is also different.The IV curve of the single conical nanopore in the KCl solution shows that the ion conduction of the single conical nanopore presents an asymmetric characteristic, which is called rectification effect. The rectification coefficient γ size Nano pore size and electrolyte solution concentration changes.