28 citations · 40 across the 8 of their papers we have counts for
12 papers · 1 filter
Resolving Structural Avalanches in Amorphous Carbon with Arclength Continuation
Fraser Birks, Ibrahim Ghanem, Lars Pastewka +2
Plastic deformation in amorphous solids is carried by localized shear transformations that self-organize into avalanches. In amorphous carbon modeled with a machine-learned interat…
Influence of tip materials on the friction force microscopy of epitaxial graphene on SiC(0001): comparison of diamond and silicon tips in experiments and atomistic simulations
Mohammad Zarshenas, Takuya Kuwahara, Bartosz Szczefanowicz +5
Friction force microscopy (FFM) with silicon tips on epitaxial graphene supported by SiC(0001) previously revealed a sharp increase in friction at a threshold normal force, linked…
Fractal structure, depinning, and hysteresis of dislocations in high-entropy alloys
Hoa Thi Le, Wolfram G. Nöhring, Lars Pastewka
High-entropy alloys (HEAs) are complex alloys containing multiple elements in high concentrations. Plasticity in HEAs is carried by dislocations, but the random nature of their com…
Comprehensive topography characterization of polycrystalline diamond coatings
Abhijeet Gujrati, Antoine Sanner, Subarna R. Khanal +4
The surface topography of diamond coatings strongly affects surface properties such as adhesion, friction, wear, and biocompatibility. However, the understanding of multi-scale top…
Solid-phase silicon homoepitaxy via shear-induced amorphization and recrystallization
Thomas Reichenbach, Gianpietro Moras, Lars Pastewka +1
The development of epitaxy techniques for localized growth of crystalline silicon nanofilms and nanostructures has been crucial to recent advances in electronics and photonics. A p…
Quantitative prediction of the fracture toughness of amorphous carbon from atomic-scale simulations
S. Mostafa Khosrownejad, James R. Kermode, Lars Pastewka
Fracture is the ultimate source of failure of amorphous carbon (a-C) films, however it is challenging to measure fracture properties of a-C from nano-indentation tests and results…