Shin, J. W. Lee, J. Y. Lee, D. U. Oh, D. H. Kim, D. H. Kim, T. W. Cho, W. J. Jin, S. 2024-01-20T22:01:12Z 2024-01-20T22:01:12Z 2021-09-01 2009-02-18 0957-4484 https://pubs.kist.re.kr/handle/201004/132733 20 nm diameter SiO2 nanopore arrays on gradient-thickness membranes were formed by a focused electron beam with in situ transmission electron microscopy (TEM). Nanopore shrinkage was seen in nanopores on thicker membranes, with the rate of diameter change remaining constant during the shrinkage process. In contrast, pore expansion was observed in thinner membranes, with the expansion rate being constant at the initial stage but with a slight increase at the later stage. The geometry model of shrinkage and expansion of the nanopores in relation to the electron irradiation time was investigated by utilizing the TEM tilting method. English IOP PUBLISHING LTD SOLID-STATE NANOPORES DNA TRANSLOCATION POLYNUCLEOTIDE MOLECULES DISCRIMINATION FABRICATION CHANNEL Irradiation-induced shrinkage and expansion mechanisms of SiO2 circle membrane nanopores Article 10.1088/0957-4484/20/7/075703 1 NANOTECHNOLOGY, v.20, no.7 NANOTECHNOLOGY 20 7 scie scopus 000262786100027 2-s2.0-65349105576 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Science & Technology - Other Topics Materials Science Physics Article SOLID-STATE NANOPORES DNA TRANSLOCATION POLYNUCLEOTIDE MOLECULES DISCRIMINATION FABRICATION CHANNEL