核孔滤膜是用R.L.Fleischer等六十年代所发展的核径迹蚀刻技术制作的。核孔滤膜的性质除了与所用塑料膜的性质、孔径、孔密度、孔分布有关外,还与孔形的微观结构有密切关系。过去对核孔形状进行的研究工作多停留在定性或半定量基础上,我们对这些方法作了改进,定量地测得了孔的不同部位处孔径的相对变化值。 Nuclear pore filters are made using nuclear track etching techniques developed by R.L. Fleischer and others in the 1960s. In addition to the nature of the nuclear membrane used in plastic film properties, pore size, pore density, pore distribution, but also with the pore shape of the microstructure is closely related. In the past, the research work on the shape of nuclear pores mostly stayed on qualitative or semi-quantitative basis. We improved these methods to quantitatively measure the relative change of pore diameter at different positions of the pores.