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Analysis of point defects in graphene using low dose scanning transmission electron microscopy imaging and maximum likelihood reconstruction

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 نشر من قبل Christian Kramberger
 تاريخ النشر 2018
  مجال البحث فيزياء
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Freestanding graphene displays an outstanding resilience to electron irradiation at low electron energies. Point defects in graphene are, however, subject to beam driven dynamics. This means that high resolution micrographs of point defects, which usually require a high electron irradiation dose might not represent the intrinsic defect population. Here, we capture the inital defects formed by ejecting carbon atoms under electron irradiation, by imaging with very low doses and subsequent reconstruction of the frequently occuring defects via a maximum likelihood algorithm.



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