Tug-of-war in nanoparticles: competitive growth of Au on Au-Fe3O4 nanoparticles.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 19842692.
- Also identified by DOI 10.1021/nl903077t.
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Abstract
Mechanical property of dumbbell-like Au-Fe(3)O(4) nanoparticles (NPs) is investigated from a synthetic point of view by overgrowing Au(2) on the Au(1)-Fe(3)O(4) NPs. The competitive growth of Au(2) on the preformed Au(1)-Fe(3)O(4) NPs induced an interesting "tug-of-war" between Au(2) and Fe(3)O(4) in the formed Au(2)-Au(1)-Fe(3)O(4) ternary nanostructure. An interpretation of the observed phenomena is proposed based on a mechanical analysis of the stress and strain distribution across the nanoparticle, which is further verified by control experiments with particle size tuned.
Medical subject headings
- Crystallization
- Ferric Compounds
- Gold
- Models, Chemical
- Nanostructures
- Nanotechnology