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 ίnformation about the relative surface energies of the nanocrystals and suggests the extent and depth of surface reconstruction.
Original language | English (US) |
---|---|
Pages (from-to) | 405-409 |
Number of pages | 5 |
Journal | Nano Letters |
Volume | 9 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2009 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- General Chemistry
- Condensed Matter Physics
- Mechanical Engineering
- Bioengineering
- General Materials Science