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Tao Xu, Kuibo Yin, Xiao Xie, Longbing He, Binjie Wang and Litao Sun Size-Dependent Evolution of Graphene Nanopores Under Thermal Excitation Small 8

Version of Record online: 20 AUG 2012 | DOI: 10.1002/smll.201200979

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Graphene nanopores expand when pore diameter is larger than membrane thickness after heat treatment; otherwise, nanopore size shrinks. Such size-dependent evolutionary mechanism of nanopores is considered as thermal-induced migration of uncombined carbon atoms. The amount of carbon adatoms determines the extent of diameter change. This could provide an applicable strategy for nanopore fabrication.

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