Irradiation-induced shrinkage and expansion mechanisms of SiO2 circle membrane nanopores

Title
Irradiation-induced shrinkage and expansion mechanisms of SiO2 circle membrane nanopores
Authors
JW ShinJ Y LeeD U LeeD H OhD H KimT W Kim조운조S Jin
Issue Date
2009-02
Publisher
Nanotechnology
Citation
VOL 20, NO 7, 075703-1-075703-5
Abstract
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.
URI
http://pubs.kist.re.kr/handle/201004/36968
ISSN
0957-4484
Appears in Collections:
KIST Publication > Article
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