Controlled Shrinking of Nanopores in Single Layer Graphene Using Electron Beam Irradiation
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چکیده
This paper reports electron beam induced shrinking of nanopores drilled in free-standing graphene. Nanopores with diameters in the range of 40-60 nm were easily shrunk down to 2 nm and even completely closed by exposure to low beam current densities in a transmission electron microscope (TEM). This method can be used to fine-tune nanopore shape and size, as well as to heal secondary defects and pinholes to produce functional graphene nanopores.
منابع مشابه
Controlled Formation of Closed-Edge Nanopores in Graphene Supporting Information
S1. Binding surface adsorbates to graphene by electron beam irradiation The low magnification image shown in figure S1a demonstrates the contrast between electron beam irradiated area and pristine area. Figure S1(b) and (c) are magnified images of the yellow and blue boxed regions respectively. The darker contrast dots are the inorganic nanocrystals on the surface of graphene. Panel c shows the...
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تاریخ انتشار 2014