| 1 | How linear molecules resist to shear:the origin of nanoscale friction显示文摘Friction force measurements between smooth surfaces across two layers of linear alkanes over five decades of speeds are presented. A maximum friction dissipation is observed at a characteristic speed. The behaviour is described by a new approach: the formation and destruction of molecular bridges between confined alkane layers. The bridges interdigitated between the layers exhibit a thermally activated resistance to shear.An analytical model involving activation barriers accounts for the overall behaviour of the forces over four decades of speed. This first simple semi-quantitative description sheds new light on the subtle mechanisms of friction at the nanoscale level and shows how the molecular length influences the tribological properties of the liquid. | Linmao QIAN G.Luengo E.Perez | 2004 | Science China(Physics,Mechanics & Astronomy)2004，47，z1： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员