Related Experiment Video
Updated: Jun 5, 2026

An Analog Macroscopic Technique for Studying Molecular Hydrodynamic Processes in Dense Gases and Liquids
Published on: December 4, 2017
Friction phenomena and phase transition in the underdamped two-dimensional Frenkel-Kontorova model
Yang Yang1, Wen-Shan Duan, Jian-Min Chen
1Department of Physics, Northwest Normal University, Lanzhou 730070, People's Republic of China.
Abstract:
Locked-to-sliding phase transition has been studied in the driven two-dimensional Frenkel-Kontorova model with the square symmetric substrate potential. It is found that as the driving force increases, the system transfers from the locked state to the sliding state where the motion of particles is in the direction different from that of driving force. With the further increase in driving force, at some critical value, the particles start to move in the direction of driving force. These two critical forces, the static friction or depinning force, and the kinetic friction force for which particles move in the direction of driving force have been analyzed for different system parameters. Different scenarios of phase transitions have been examined and dynamical phases are classified. In the case of zero misfit angle, the analytical expressions for static and kinetic friction force have been obtained.
Related Concept Videos
Damped Oscillations
Although friction and other non-conservative...
Types of Damping
Types of Friction Problems
The first type of dry friction problem involves situations where there is no apparent impending motion.
Phase Transitions
Phase Transitions
Static and Kinetic Frictional Force
However, if two systems are in contact and are stationary relative to one...

