Researchers at the University of Manchester have built a graphene-hBN superlattice that contains 10 layers of graphene. The researchers posted a very cool video showing the removal and mounting of a sample onto a TEM mount using focused ion beam milling for evaluation of the superlattice. The paper Graphene-based heterostructures and superlattices: Cross-sectional imaging of individual layers and buried interfaces by S. J. Haigh et. al. is available on arXiv.
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