Atomic-scale friction control by vibration using friction force microscope
Abbreviated Journal Title
Control Eng. Practice
Nonlinear control; Friction; Vibration; Nano-scale systems; Friction; force microscope; NONLINEAR-SYSTEMS; DRY FRICTION; SLIDING FRICTION; DYNAMICS; NANOTRIBOLOGY; MONOLAYERS; DITHER; MOTION; MODEL; Automation & Control Systems; Engineering, Electrical & Electronic
Manipulation of friction at the nanoscale has been traditionally approached by chemical means (lubrication). Recent friction force microscopy (FFM) experiments demonstrated that it can be done mechanically by applying vibration to accessible elements of the system. This paper provides analytic understanding on why vibration can reduce friction based on a 1D model imitating the FFM tip moving on a substrate. Open-loop stability is first studied, and a feedback vibration control is then designed using the accessible variable. Comparing to the open-loop system, friction force is significantly reduced in the closed-loop system. Numerical simulations show satisfactory performances. (C) 2011 Elsevier Ltd. All rights reserved.
Control Engineering Practice
"Atomic-scale friction control by vibration using friction force microscope" (2011). Faculty Bibliography 2010s. 1339.