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Bending-induced extension in two-dimensional crystals
Pan DX(潘斗星); Li Y; Wang ZQ(王自强); Guo WL; Wang, TC (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.

We find by ab initio simulations that significant overall tensile strain can be induced by pure bending in a wide range of two-dimensional crystals perpendicular to the bending moment, just like an accordion being bent to open. This bending-induced tensile strain increases in a power law with bent curvature and can be over 20% in monolayered black phosphorus and transition metal dichalcogenides at a moderate curvature of but more than an order weaker in graphene and hexagon boron nitride. This accordion effect is found to be a quantum mechanical effect raised by the asymmetric response of chemical bonds and electron density to the bending curvature.

Indexed BySCI ; EI ; CSCD
WOS IDWOS:000394153000007
WOS KeywordMonolayer Black Phosphorus ; Bending To Extension ; Accordion Effect ; Density Functional Theory
WOS Research AreaEngineering ; Mechanics
WOS SubjectEngineering, Mechanical ; Mechanics
Funding OrganizationThis project was supported by the 973 program (Grants 2012CB937500, 2013CB932604), the National Natural Science Foundation of China (Grants 51535005, 51472117, 11021262, 11172303, 11132011), and the Fundamental Research Funds for the Central Universities (Grant NP2013309). We thank X.F. Liu for helpful discussions and W.H. Tang for help in drawing some of the geometrical figures.
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding AuthorGuo WL; Wang, TC (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Pan DX,Li Y,Wang ZQ,et al. Bending-induced extension in two-dimensional crystals[J]. ACTA MECHANICA SINICA,2017,33(1):71-76.
APA Pan DX,Li Y,Wang ZQ,Guo WL,&Wang, TC .(2017).Bending-induced extension in two-dimensional crystals.ACTA MECHANICA SINICA,33(1),71-76.
MLA Pan DX,et al."Bending-induced extension in two-dimensional crystals".ACTA MECHANICA SINICA 33.1(2017):71-76.
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