Probing the crystallographic orientation of two-dimensional atomic crystals with supramolecular self-assembly.

ABSTRACT: Probing the crystallographic orientation of two-dimensional (2D) materials is essential to understand and engineer their properties. However, the nondestructive identification of the lattice orientations of various 2D materials remains a challenge due to their very thin nature. Here, we identify the crystallographic structures of various 2D atomic crystals using molecules as probes by utilizing orientation-dependent molecule-substrate interactions. We discover that the periodic atomic packing of 2D materials guides oleamide molecules to assemble into quasi-one-dimensional nanoribbons with specific alignments which precisely indicate the lattice orientations of the underlying materials. Using oleamide molecules as probes, we successfully identify the crystallographic orientations of ~12 dif

SUBMITTER: Wang J 

PROVIDER: S-EPMC5575328 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature