Flexoelectricity-driven periodic buckling in multilayer graphene bonded to compliant substrate
Author(s)
Kothari, Mrityunjay; Kim, Kyung-Suk
Download43579_2022_239_ReferencePDF.pdf (1.325Mb)
Publisher Policy
Publisher Policy
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Terms of use
Metadata
Show full item recordAbstract
Abstract
Flexoelectricity in multilayer graphene (MLG) buckling can stimulate kink-shaped crinkle formation. In the process, the bifurcation becomes subcritical and the suspended-MLG’s crinkle curvature is localized to a narrow band of
$$\sim 2nm$$
∼
2
n
m
width. We extend the study to flexoelectric layers bonded to a soft elastic substrate. Elastic substrates can guide the morphology of MLG and produce periodic patterns. We show that MLG’s flexoelectricity together with substrate elasticity can produce periodic crinkles, which qualitatively explains the grade-dependent mosaic spreading in highly oriented pyrolytic graphite (HOPG). Experimental measurements of HOPG’s surface-slope variations indeed confirm curvature localization at the crinkle valleys and ridges.
Graphical abstract
Date issued
2022-09-07Department
Massachusetts Institute of Technology. Department of Civil and Environmental EngineeringPublisher
Springer International Publishing
Citation
Kothari, Mrityunjay and Kim, Kyung-Suk. 2022. "Flexoelectricity-driven periodic buckling in multilayer graphene bonded to compliant substrate."
Version: Author's final manuscript