Mechanical Engineering, School of Engineering, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182, United States of America.
Nanotechnology. 2019 Feb 1;30(5):055701. doi: 10.1088/1361-6528/aaef11. Epub 2018 Nov 30.
The influence of crystal orientation (including [100], [110], and [111]) and diameter (ranging from 2 to 10 nm) on the tensile deformation behavior and mechanical properties of single-crystal spinel (MgAlO) nanowires is investigated using molecular dynamics simulations. Varied deformation characteristics and fracture modes are revealed when the tensile loading is applied in the differently oriented nanowires. Mechanical properties including elastic modulus and ultimate tensile strength of spinel nanowires are distinctly dependent on size in each crystal orientation. This study advances the understanding of spinel nanomechanics which can help the development of high-strength spinel materials and their potential nanodevice applications.
采用分子动力学模拟研究了晶体取向（包括[100]、[110]和[111]）和直径（2-10nm）对单晶尖晶石（MgAlO）纳米线拉伸变形行为和力学性能的影响。当在不同取向的纳米线中施加拉伸载荷时，揭示了不同的变形特征和断裂模式。在每种晶体取向中，弹性模量和纳米线的极限拉伸强度等力学性能都明显依赖于尺寸。本研究推进了对尖晶石纳米力学的理解，这有助于高强度尖晶石材料的开发及其潜在的纳米器件应用。
