Graphene origami structures with superflexibility and highly tunable auxeticity

Abstract
The two-dimensional structure of graphene makes it difficult to realize flexibility and auxeticity (negative Poisson’s ratio) in graphene-based structures. Using molecular dynamics simulations, we demonstrate for graphene origami structures effective tuning of both the flexibility and Poisson’s ratio through the geometry, including the potential to combine superflexibility with a highly tunable negative Poisson’s ratio in contrast to any existing graphene-based structure. Auxeticity even can be achieved under large applied strain, both tensile and compressive.

Citation
Ho, D. T., Kim, S. Y., & Schwingenschlögl, U. (2020). Graphene origami structures with superflexibility and highly tunable auxeticity. Physical Review B, 102(17). doi:10.1103/physrevb.102.174106

Acknowledgements
The research reported in this publication was supported by funding from King Abdullah University of Science and Technology (KAUST). This work used computational resources of the Supercomputing Laboratory at KAUST. S.Y.K. acknowledges support from the Mid-Career Researcher Support Program (No. 2019R1A2C2011312) of the National Research Foundation (NRF) of Korea.

Publisher
American Physical Society (APS)

Journal
Physical Review B

DOI
10.1103/physrevb.102.174106

Additional Links
https://link.aps.org/doi/10.1103/PhysRevB.102.174106

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