Understanding contact between platinum nanocontacts at low loads: The effect of reversible plasticity
作者: Sai Bharadwaj VishnubhotlaRimei ChenSubarna R KhanalAshlie MartiniTevis D B Jacobs
作者单位: 1Department of Mechanical Engineering and Materials Science, University of Pittsburgh, Pittsburgh, PA 15261, United States of America
2Department of Mechanical Engineering, University of California-Merced, Merced, CA 95343, United States of America
刊名: Nanotechnology, 2019, Vol.30 (3)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1361-6528/aaea2b
原始语种摘要: Metal nanocontacts play a critical role in atomic force microscopy, functional nanostructures, metallic nanoparticles, and nanoscale electromechanical devices. In all cases, knowledge of the area of contact, and its variation with load, is critical for the quantitative prediction of behavior. Often, the contact area is predicted using continuum mechanics models which relate contact size to geometry, material properties, and load. Here we show for platinum nanoprobes that the contact size deviates significantly from these continuum predictions, even at low applied loads and in the absence of irreversible shape change. We use in situ transmission electron microscopy (TEM) with matched molecular dynamics (MD) simulations to investigate the load-dependent size of the contact. Direct...
全文获取路径: IOP 
影响因子:3.842 (2012)

  • contact 接触圈
  • platinum 
  • reversible 可逆的
  • critical 临界的
  • continuum 群体连续体
  • mechanics 力学
  • material 充填料
  • microscopy 显微镜检查
  • insufficient 不足的
  • dislocation 断层