CdSe nanoparticle elasticity and surface energy.
basic_science · Level V
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- Record sourced from PubMed, PMID 19061357.
- Also identified by DOI 10.1021/nl803275a.
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Abstract
The acoustic phonon modes of colloidal CdSe nanoparticles in solution (293 K) are passively measured by a third order ultrafast heterodyne cross-polarized transient grating measurement. Using the observed size-dependence of the acoustic phonon frequency, the elastic properties of the nanoparticles are determined. The size-dependence of the elastic modulus is then used to ascertain information about the relative surface energies of the nanocrystals and suggests the extent and depth of surface reconstruction.
Medical subject headings
- Cadmium Compounds
- Crystallization
- Models, Chemical
- Nanostructures
- Nanotechnology
- Selenium Compounds
- Titanium