Braun O M, Peyrard M
Institute of Physics, National Academy of Sciences of Ukraine, 03650 Kiev, Ukraine.
Phys Rev E Stat Nonlin Soft Matter Phys. 2003 Jul;68(1 Pt 1):011506. doi: 10.1103/PhysRevE.68.011506. Epub 2003 Jul 23.
Molecular dynamics is used to investigate the melting of a thin lubricant film confined between two crystalline surfaces. The dynamics of the film is significantly affected by the substrate, both in the solid and in the molten phases. The solid phase, able to sustain shear stress, shows, however, large diffusional motions of the atoms. The melting temperature depends strongly on the confinement. A phenomenological microscopic theory, based on the Lindemann criterion, is proposed to explain this effect.
分子动力学被用于研究限制在两个晶体表面之间的薄润滑膜的熔化过程。在固相和熔融相中，膜的动力学都受到基底的显著影响。然而，能够承受剪切应力的固相显示出原子的大量扩散运动。熔化温度强烈依赖于限制条件。基于林德曼准则提出了一种唯象微观理论来解释这种效应。
