Effects of mismatch strain and substrate surface corrugation on morphology of supported monolayer graphene
165 citations recorded by the source corpus.
Graphene monolayers supported on oxide substrates have been demonstrated with superior charge mobility and thermal transport for potential device applications. Morphological corrugation can strongly influence the transport properties of the supported graphene. In this paper, we theoretically analyze the morphological stability of a graphene monolayer on an oxide substrate, subject to van der Waals interactions and in-plane mismatch strains. First, we define the equilibrium separation and the interfacial adhesion energy as the two key parameters that characterize the van der Waals interaction between a flat monolayer and a flat substrate surface. By a perturbation analysis, a critical compressive mismatch strain is predicted, beyond which the graphene monolayer undergoes strain-induced instability, forming corrugations with increasing amplitude and decreasing wavelength on a perfectly flat surface. When the substrate surface is not perfectly flat, the morphology of graphene depends on both the amplitude an...
Subfields: Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/13098f441d7005513987238e46c017d0d8ec53bb
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Materials Chemistry
Citations in the corpus
- Ultrastrong adhesion of graphene membranes. (2011, background): “Recent theory that idealizes the substrate roughness as a sinusoidal profile shows a jump in adhesion energy with wavelength and amplitud”
- A review on mechanics and mechanical properties of 2D materials—Graphene and beyond (2016, methodology): “(6) may be further simplified to a two-parameter form as a continuum approximation of the vdW interactions [348]:”