Joining of graphene flakes by low energy N ion beam irradiation
X Wu and HY Zhao and JY Pei and D Yan, APPLIED PHYSICS LETTERS, 110, 133102 (2017).
An approach utilizing low energy N ion beam irradiation is applied in joining two monolayer graphene flakes. Raman spectrometry and atomic force microscopy show the joining signal under 40 eV and 1 x 10(14) cm(-2) N ion irradiation. Molecular dynamics simulations demonstrate that the joining phenomenon is attributed to the punch-down effect and the subsequent chemical bond generation between the two sheets. The generated chemical bonds are made up of inserted ions (embedded joining) and knocked-out carbon atoms (saturation joining). The electronic transport properties of the joint are also calculated for its applications. Published by AIP Publishing.
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