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Orientational Epitaxy of van der Waals Molecular Heterostructures

Lu’an Guo, Yitao Wang, Dogan Kaya, Richard Palmer Orcid Logo, Guangde Chen, Quanmin Guo

Nano Letters, Volume: 18, Issue: 8, Pages: 5257 - 5261

Swansea University Author: Richard Palmer Orcid Logo

Abstract

The shape of individual building blocks is an important parameter in bottom-up self-assembly of nanostructured materials. A simple shape change from sphere to spheroid can significantly affect the assembly process due to the modification to the orientational degrees of freedom. When a layer of spher...

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Published in: Nano Letters
ISSN: 1530-6984 1530-6992
Published: 2018
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa41118
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Abstract: The shape of individual building blocks is an important parameter in bottom-up self-assembly of nanostructured materials. A simple shape change from sphere to spheroid can significantly affect the assembly process due to the modification to the orientational degrees of freedom. When a layer of spheres is placed upon a layer of spheroids, the strain at the interface can be minimized by the spheroid taking a special orientation. C70 fullerenes represent the smallest spheroids, and their interaction with a sphere-like C60 is investigated. We find that the orientation of the C70 within a close-packed C70 layer can be steered by contacting a layer of C60. This orientational steering phenomenon is potentially useful for epitaxial growth of multilayer van der Waals molecular heterostructures.
Keywords: epitaxy; fullerene; graphene; interface; scanning tunnelling microscopy; self-assembly; van der Waals heterostructures
College: College of Engineering
Issue: 8
Start Page: 5257
End Page: 5261