Anomalous Flexural Elasticities of Graphene Membranes Unveiled by Manipulating Topology

Ashino, Makoto; Nishioka, Keita; Hayashi, Keiji; Wiesendanger, R.

doi:10.1103/physrevlett.126.146101

Cited by 3 publications

(2 citation statements)

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“…[155] Recent works have proposed several methods to measure the bending rigidity of 2D materials. [9,156] For example, Edmund Han et al determined the bending rigidity of 2D materials through analyzing the radius of their bending region across an atomically sharp step of the underlying substrate. [9] The bending rigidity can also be determined by manipulating topology of 2D flakes with following 3D force field imaging with AFM.…”

Section: Anisotropic Bending Rigiditymentioning

confidence: 99%

“…[9] The bending rigidity can also be determined by manipulating topology of 2D flakes with following 3D force field imaging with AFM. [156] However, both these works did not investigate the anisotropic bending rigidity of 2D materials. To elucidate the bending anisotropy of 2D materials, Zhao et al reconstructed the 3D morphology of the folded edges with atomic resolution [148] (Figure 11a) based on high-resolution TEM imaging.…”

Section: Anisotropic Bending Rigiditymentioning

confidence: 99%

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Anisotropic Mechanics of 2D Materials

Gao

Jiang

et al. 2022

Adv Eng Mater

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Anisotropic mechanics of van der Waals (vdWs) materials offers opportunity to peel off individual atomic layers, initiating a 2D revolution in the fields of materials science, physics, and chemistry. The elasticity, bending, and fracture strength of most of their 2D derivatives are also orientation‐dependent, which not only determines the reliability of devices based on 2D materials but also offers a vast playground for atomic manufacturing with tunable functions. Therefore, a comprehensive understanding of the anisotropic mechanical properties of 2D materials is imminent. In this review, the anisotropic mechanical properties of 2D materials are summarized in attempt to capture the current progress in this field, as well as the route toward their applications. Following a brief discussion of the anisotropic lattice structures of 2D materials, unique experimental methodologies that have been developed to characterize their anisotropic mechanics are discussed. Then, the review pivots on recent processes in anisotropic elastic, fracture, friction, and bending properties of 2D materials. Unique applications of these anisotropic properties, such as mechanical fabrication of atomic precision, as well as anisotropic strain‐induced piezoelectric and band modulation, are further highlighted. Finally, besides emphasizing the need for breakthrough in anisotropic mechanics, prospects for the developments of this field are suggested.

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