Role of hysteresis in the molecular picture of friction
Literature Information
D. J. Diestler, G. T. Gao, X. C. Zeng
A constrained Monte Carlo technique was used to study the effects of hysteresis on the friction curve (shear yield stress s. normal stress) for an ideal microscopic contact: two rigid crystalline surfaces separated by a mobile adsorbed film. The constraint in the form of an auxiliary external field corresponds to the relaxation time for migration of admolecules relative to the time required for a measurement. Wide variation in the form of the friction curve with the (relative) relaxation time shows that hysteresis (irreversibility) must be incorporated into a complete molecular picture of friction.
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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.











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