Fracture Toughness
- J. Labille, Natalia Pelinovskaya, Jiannan Lu
- Medicine, Materials Science
- 2018
From evaluating the fracture properties of materials tested in this study it was concluded that the mean fracture toughness value for Spectrum TPH (Dentsply) was significantly higher than that of Ideal Macoo resin composite material (Ideal Macoo, Iran).
Frictional duality observed during nanoparticle sliding.
- D. Dietzel, C. Ritter, Tristan Mönninghoff, H. Fuchs, A. Schirmeisen, U. Schwarz
- Physics, Materials SciencePhysical Review Letters
- 16 May 2008
While some particles show finite friction increasing linearly with the interface areas of up to 310 000 nm(2), other particles assume a state of frictionless sliding, suggesting a link between the degree of surface contamination and the occurrence of this duality.
Principles of atomic friction: from sticking atoms to superlubric sliding
- H. Hölscher, A. Schirmeisen, U. Schwarz
- Physics, Materials SciencePhilosophical Transactions of the Royal Society A…
- 28 April 2008
The present article reviews the current understanding of the principles of atomic-scale friction based on recent experiments using friction force microscopy to establish nanotribology.
Temperature dependence of atomic-scale stick-slip friction.
- L. Jansen, H. Hölscher, H. Fuchs, A. Schirmeisen
- PhysicsPhysical Review Letters
- 25 June 2010
Experiments of atomic stick-slip friction on graphite as an explicit function of surface temperature between 100 and 300 K under ultrahigh vacuum conditions reveal agreement with the thermally activated Prandtl-Tomlinson model at all temperatures.
Scaling laws of structural lubricity.
- D. Dietzel, Michael Feldmann, U. Schwarz, H. Fuchs, A. Schirmeisen
- Materials SciencePhysical Review Letters
- 2 December 2013
Mesoscopic friction is measured by measuring the sliding resistance of amorphous antimony and crystalline gold nanoparticles on crystalline graphite to link mesoscopic friction to atomic principles.
Temperature dependence of point contact friction on silicon
- A. Schirmeisen, L. Jansen, H. Hölscher, H. Fuchs
- Physics, Materials Science
- 22 March 2006
Point contact friction and adhesion between a silicon tip and an untreated silicon(111) wafer are measured as a function of sample temperature in ultrahigh vacuum by friction force microscopy. While…
Multibond dynamics of nanoscale friction: the role of temperature.
- Itay Barel, M. Urbakh, L. Jansen, A. Schirmeisen
- Materials Science, PhysicsPhysical Review Letters
- 12 February 2010
These experiments reveal a nonmonotonic enhancement of dry nanoscale friction at cryogenic temperatures for different material classes and Concerted simulations show that it emerges from two competing processes acting at the interface: the thermally activated formation as well as rupturing of an ensemble of atomic contacts.
On-Surface Synthesis and Characterization of a Cycloarene: C108 Graphene Ring.
- Q. Fan, D. Martin-Jimenez, J. M. Gottfried
- ChemistryJournal of the American Chemical Society
- 16 December 2019
This work achieves an unprecedented double-stranded hexagonal cycloarene containing 108 sp2 carbon atoms, based on hierarchical Ullmann coupling and cyclodehydrogenation of a specially designed precursor on a Au(111) surface.
Nanotribological studies using nanoparticle manipulation: Principles and application to structural lubricity
- D. Dietzel, U. Schwarz, A. Schirmeisen
- Materials Science
- 19 June 2014
The term “structural lubricity” denotes a fundamental concept where the friction between two atomically flat surfaces is reduced due to lattice mismatch at the interface. Under favorable…
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