Mechanical Engineering Faculty Research
Title
Atomistic Study of Lateral Contact Stiffness in Friction Force Microscopy
Document Type
Article
Publication Date
6-2014
Abstract
The effective stiffness of a friction force microscope tip–substrate system is an important parameter that describes the relationship between lateral force and elastic deformation. In this study, we use a multi-spring model to simplify the system, where two contributions, the tip apex stiffness and the lateral contact stiffness, are discussed in detail. Molecular dynamics simulations are used to characterize stiffness by simulating a tip apex subject to shear or sliding over a substrate surface. The results show that, although the height of the tip apex and tip–substrate orientation affect the various stiffness contributions, the contact itself dominates the overall compliance.
Publication Title
Tribology International
Volume
74
First Page
57
Last Page
61
Recommended Citation
Gao, Huang; Dong, Yalin; and Martini, Ashlie, "Atomistic Study of Lateral Contact Stiffness in Friction Force Microscopy" (2014). Mechanical Engineering Faculty Research. 806.
https://ideaexchange.uakron.edu/mechanical_ideas/806