6533b853fe1ef96bd12ad7b5
RESEARCH PRODUCT
Plastic Deformation of Single Nanometer-Sized Crystals
Kai NordlundTommy AhlgrenFlorian BanhartArkady V. KrasheninnikovArkady V. KrasheninnikovLitao SunLitao Sunsubject
Materials scienceGeneral Physics and Astronomy02 engineering and technology021001 nanoscience & nanotechnology01 natural sciencesVacancy defect0103 physical sciencesElectron beam processingNanometreComposite materialDislocationDeformation (engineering)010306 general physics0210 nano-technologyHigh-resolution transmission electron microscopyNanoscopic scaleIn situ electron microscopydescription
We report in situ electron microscopy observations of the plastic deformation of individual nanometer-sized Au, Pt, W, and Mo crystals. Specifically designed graphitic cages that contract under electron irradiation are used as nanoscopic deformation cells. The correlation with atomistic simulations shows that the observed slow plastic deformation is due to dislocation activity. Our results also provide evidence that the vacancy concentration in a nanoscale system can be smaller than in the bulk material, an effect which has not been studied experimentally before.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2008-04-17 | Physical Review Letters |