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Graphene Nanoribbons with Atomically Sharp Edges Produced by AFM Induced Self-Folding

Title
Graphene Nanoribbons with Atomically Sharp Edges Produced by AFM Induced Self-Folding
Author
김수은
Keywords
AFM; atomically sharp edge; graphene nanoribbon; graphene origami; self-folding
Issue Date
2018-11
Publisher
WILEY-V C H VERLAG GMBH
Citation
SMALL, v. 14, No. 47, Article no. 1803386
Abstract
The ability to create graphene nanoribbons with atomically sharp edges is important for various graphene applications because these edges significantly influence the overall electronic properties and support unique magnetic edge states. The discovery of graphene self-folding induced by traveling wave excitation through atomic force microscope scanning under a normal force of less than 15 nN is reported. Most remarkably, the crystallographic direction of self-folding may be either along a chosen direction defined by the scan line or along the zigzag or armchair direction in the presence of a pre-existing crack in the vicinity. The crystalline direction of the atomically sharp edge is confirmed via careful lateral force microscopy measurements. Multilayer nanoribbons with lateral dimensions of a few tens of nanometers are realized on the same graphene sheet with different folding types (e.g., z-type or double parallel). Molecular dynamics simulations reveal the folding dynamics and suggest a monotonic increase of the folded area with the applied normal force. This method may be extended to other 2D van der Waals materials and lead to nanostructures that exhibit novel edge properties without the chemical instability that typically hinders applications of etched or patterned graphene nanostructures.
URI
https://onlinelibrary.wiley.com/doi/full/10.1002/smll.201803386http://repository.hanyang.ac.kr/handle/20.500.11754/105775
ISSN
1613-6810; 1613-6829
DOI
10.1002/smll.201803386
Appears in Collections:
COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY[E](과학기술융합대학) > PHOTONICS AND NANOELECTRONICS(나노광전자학과) > Articles
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