Orientational epitaxy of van der Waals molecular heterostructures

Lu'an Guo, Quanmin Guo, Yitao Wang, Dogan Kaya, Richard Palmer, Guangde Chen

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)
133 Downloads (Pure)

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.
Original languageEnglish
Pages (from-to)5257-5261
JournalNano Letters
Volume18
DOIs
Publication statusPublished - 12 Jul 2018

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