Super stretchable hexagonal boron nitride Kirigami

THIN SOLID FILMS

卷:632

Article

Han, Tongwei¹  Scarpa, Fabrizio²  Allan, Neil L.³ 

[1] Jiangsu Univ, Sch Civil Engn & Mech, Zhenjiang, Jiangsu, Peoples R China

[2] Univ Bristol, Adv Composites Ctr Innovat & Sci, Bristol BS8 1TR, Avon, England

[3] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England

关键词: Hexagonal boron nitride;    Kirigami;    Mechanical properties;    Molecular dynamics;   

DOI  :  10.1016/j.tsf.2017.03.059

来源: Elsevier

【 摘 要 】

Kirigami, the ancient Japanese art of cutting and folding paper at the macroscale, has been recently applied to produce nanostructures with unusual deformation mechanisms. In this work we analyse the mechanical properties and deformation mechanisms leading to remarkable stretching and bilinear stiffness in armchair and zigzag hexagonal boron nitride (h-BN) Kirigami nanosheets using classical molecular dynamics simulations. We identify three geometric parameters that govern the mechanics and ductility of Kirigami h-BN. Enhancements in tensile strains up to 3-5 times higher than those of pristine h-BN can be obtained. The variations of stiffness, ultimate strength and strain with the parameters defining the Kirigami defect patterns can be used to tune the mechanical properties of h-BN and other nano 2D structures, potentially expanding their applications in bio-compatible strain-engineered nanodevices and nanoelectronics. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

Free