Friction and capillary forces

减少摩擦力对于改善设备中移动部件的性能非常重要，并且对于减轻人们的关节疼痛也很有用。在环境条件下，受限液体对摩擦力有很大的影响，因为吸引力是由表面之间的毛细凝聚和吸附引起的。毛细管力和摩擦力之间的相关性将澄清与新开发的表面力仪器在各种条件下的力测量。本文还从热力学角度对滑动表面间的分子层状液体对摩擦性能的影响作了理论解释。

Reducing friction forces is important for improving the performance of moving components in devices, and also useful for relieving people from pains at joints. In ambient conditions, confined liquids have a great influence on friction forces because an attractive force is induced by capillary condensation and adsorption between the surfaces. The correlation between capillary and friction forces will be clarified by force measurements with newly developed surface force apparatuses in various conditions. Theoretical interpretation of influences of molecular layered liquids between the sliding surfaces on frictional behaviour will be also given based on thermodynamics.