120 citations · 758 across the 20 of their papers we have counts for
20 papers
Ultra high strength and plasticity mechanisms of Si and SiC nanoparticles revealed by first principles molecular dynamics
Laurent Pizzagalli, Julien Godet
It is now well established that materials are stronger when their dimensions are reduced to submicron scale. However, what happens at dimensions such as a few tens of nanometers or…
Tailoring the plasticity of topologically close-packed phases via the crystals' fundamental building blocks
Wei Luo, Zhuocheng Xie, Siyuan Zhang +10
Brittle topologically close-packed precipitates form in many advanced alloys. Due to their complex structures little is known about their plasticity. Here, we present a strategy to…
Atomic and electronic structures of a vacancy in amorphous silicon
Andreas Pedersen, Laurent Pizzagalli, Hannes Jonsson
Locally, the atomic structure in well annealed amorphous silicon appears similar to that of crystalline silicon. We address here the question whether a point defect, specifically a…
Glissile dislocations with transient cores in silicon
Laurent Pizzagalli, Julien Godet, Sandrine Brochard
We report an unexpected characteristic of dislocation cores in silicon. Using first-principles calculations, we show that all the stable core configurations for a non-dissociated 6…
Theoretical study of kinks on screw dislocation in silicon
Laurent Pizzagalli, Andreas Pedersen, Andri Arnaldsson +2
Theoretical calculations of the structure, formation and migration of kinks on a non-dissociated screw dislocation in silicon have been carried out using density functional theory…
Effects of temperature and surface step on the incipient plasticity in strained aluminium studied by atomistic simulations
Pierre Hirel, Sandrine Brochard, Laurent Pizzagalli +1
Atomistic simulations using an EAM potential are carried out to investigate the first stages of plasticity in aluminum slabs, in particular the effect of both temperature and step…