Even inherently brittle hollow silicon nanoparticles (NPs) can withstand larger strain to failure than solid NPs. However, the influence of wall thickness on the mechanical behavior of hollow Si NPs is not fully understood. Using molecular dynamics simulations, we investigate the compressive behavior of hollow Si NPs. Three distinct failure mechanisms of hollow NPs are uncovered, and their strength and deformability are analyzed quantitatively. For extra-thick-walled NPs, dislocations will nucleate below the contact area and cut through the particles till failure. For mid-thick-walled NPs, however, dislocations will emit from the inner surface and slip towards the outer surface. For thin-walled NPs, elastic buckling is the cause of failure....
Deformation and fracture mechanisms of ultrathin Si nanowires (NWs), with diameters of down to ~9 nm...
While bulk silicon is brittle at temperatures below 600-700K, the compression of nanopillars has sho...
International audienceMolecular dynamics (MD) simulations of silicon nanowires (NW) tensile deformat...
International audienceMolecular dynamics simulations were carried out to investigate the mechanical ...
University of Minnesota Ph.D. dissertation. May 2011. Major: Material Science and Engineering. Advis...
International audienceThe compression of amorphous silicon nanoparticles is investigated by means of...
International audienceAlthough the literature on mechanical properties of nanostructures is extensiv...
Recent measurements have indicated that the elastic behaviour of silicon nanocantilevers and nanowir...
The tension and compression of single-crystalline silicon nanowires (SiNWs) with different cross-sec...
International audienceAbstract Physical properties of nano-objects differ from what they are in bulk...
Palladium nanoparticles are technologically important for catalysis, hydrogen storage, and many othe...
International audienceThe mechanical properties of materials usually depend on the size of the consi...
The compressive mechanical responses of silicon nanoparticles with respect to crystallographic orien...
Palladium nanoparticles are technologically important for catalysis, hydrogen storage, and many othe...
Polycrystalline hollow nanoparticles present a unique combination of strength and flexibility. Howev...
Deformation and fracture mechanisms of ultrathin Si nanowires (NWs), with diameters of down to ~9 nm...
While bulk silicon is brittle at temperatures below 600-700K, the compression of nanopillars has sho...
International audienceMolecular dynamics (MD) simulations of silicon nanowires (NW) tensile deformat...
International audienceMolecular dynamics simulations were carried out to investigate the mechanical ...
University of Minnesota Ph.D. dissertation. May 2011. Major: Material Science and Engineering. Advis...
International audienceThe compression of amorphous silicon nanoparticles is investigated by means of...
International audienceAlthough the literature on mechanical properties of nanostructures is extensiv...
Recent measurements have indicated that the elastic behaviour of silicon nanocantilevers and nanowir...
The tension and compression of single-crystalline silicon nanowires (SiNWs) with different cross-sec...
International audienceAbstract Physical properties of nano-objects differ from what they are in bulk...
Palladium nanoparticles are technologically important for catalysis, hydrogen storage, and many othe...
International audienceThe mechanical properties of materials usually depend on the size of the consi...
The compressive mechanical responses of silicon nanoparticles with respect to crystallographic orien...
Palladium nanoparticles are technologically important for catalysis, hydrogen storage, and many othe...
Polycrystalline hollow nanoparticles present a unique combination of strength and flexibility. Howev...
Deformation and fracture mechanisms of ultrathin Si nanowires (NWs), with diameters of down to ~9 nm...
While bulk silicon is brittle at temperatures below 600-700K, the compression of nanopillars has sho...
International audienceMolecular dynamics (MD) simulations of silicon nanowires (NW) tensile deformat...