Friction vs. Area Scaling of Superlubric NaCl-Particles on Graphite

Principles of atomic friction: from sticking atoms to superlubric sliding.

Tribology-the science of friction, wear and lubrication-is of great importance for all technical applications where moving bodies are in contact. Nonetheless, little progress has been made in finding an exact atomistic description of friction since Amontons proposed his empirical macroscopic laws over three centuries ago. The advent of new experimental tools such as the friction force microscop...

INTERNAL FRICTION OF DEFORMED NaCL

Internal friction of deformed oriented NaCl single crystals has been measured as a function of flow stress, strain amplitude, frequency, temperature and divalent doping. In pure NaCl af er deformation a maximum of internal friction PI is observed at low temperatures. With increasing 1+ Sr doping a second but much weaker peak P2 appears at higher temperatures. The dependencies of PI on the...

Superlubric to stick-slip sliding of incommensurate graphene flakes on graphite

Nonuniform friction-area dependency for antimony oxide surfaces sliding on graphite

Claudia Ritter,1,2 Mehmet Z. Baykara,3 Bert Stegemann,4 Markus Heyde,1,* Klaus Rademann,1 Jan Schroers,2 and Udo D. Schwarz2,† 1Institute of Chemistry, Humboldt Universität zu Berlin, Brook-Taylor-Strasse 2, 12489 Berlin, Germany 2Department of Mechanical Engineering and Materials Science and Center for Research on Interface Structures and Phenomena (CRISP), Yale University, P.O. Box 208284, Ne...

the washback effect of discretepoint vs. integrative tests on the retention of content in knowledge tests

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