分子尺度下粘附滞后与摩擦之间的相关性。

Correlations between adhesion hysteresis and friction at molecular scales.

作者信息

Szoszkiewicz R, Bhushan B, Huey B D, Kulik A J, Gremaud G

机构信息

Institute of Physics of Complex Matter, Ecole Polytechnique Federale de Lausanne, CH-1015 Lausanne, Switzerland.

出版信息

J Chem Phys. 2005 Apr 8;122(14):144708. doi: 10.1063/1.1886751.

DOI:10.1063/1.1886751

PMID:15847554

Abstract

Correlations between adhesion hysteresis and local friction are theoretically and experimentally investigated. The model is based on the classical theory of adhesional friction, contact mechanics, capillary hysteresis, and nanoscale roughness. Adhesion hysteresis was found to scale with friction through the scaling factor containing a varying ratio of adhesion energy over the reduced Young's modulus. Capillary forces can offset the relationship between adhesion hysteresis and friction. Measurements on a wide range of engineering samples with varying adhesive and elastic properties confirm the model. Adhesion hysteresis is investigated under controlled, low humidity atmosphere via ultrasonic force microscopy. Friction is measured by the friction force microscopy.

摘要

从理论和实验两方面研究了粘附滞后与局部摩擦之间的相关性。该模型基于粘附摩擦、接触力学、毛细滞后和纳米尺度粗糙度的经典理论。研究发现，粘附滞后通过一个包含粘附能与约化杨氏模量变化比率的比例因子与摩擦成比例。毛细力可以抵消粘附滞后与摩擦之间的关系。对具有不同粘附和弹性特性的多种工程样品进行的测量证实了该模型。通过超声力显微镜在受控的低湿度环境下研究粘附滞后。通过摩擦力显微镜测量摩擦力。