2016/08/31 by Douxing Pan, Yao Li, Tzu-Chiang Wang +2 · 12 citations
Chemistry · Materials Science · Physics and Astronomy · #2D Materials and Applications #Bending #Bent molecular geometry #Boron nitride #Chemistry #Composite material #Condensed matter physics #Crystallography #Curvature #Ga2O3 and related materials #Geometry #Graphene #Graphene research and applications #Materials science #Nanotechnology #Physics #Pure bending #cond-mat.mtrl-sci
paper · pdf · doi:10.1007/s10409-016-0602-2
published in Acta Mechanica Sinica 33(1), 71-76 (Springer Science+Business Media)
openalex publication_date 2016/11/10 · arxiv created 2017/04/11 · arxiv updated 2017/04/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
According to the classical theory of elasticity, a plate subjected to a bending moment always deflects with symmetric tensile and compressive strains in its two sides, without overall deformation perpendicular to the bending moment. Here, 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 accordion effect is raised by asymmetric response of chemical bonds and electron density to the bending curvature, with the tensile strain being a power function of the curvature.