Viscoplastic and Granular Behavior in Films of Colloidal Nanocrystals
- 9 January 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 98 (2), 026103
- https://doi.org/10.1103/physrevlett.98.026103
Abstract
Nanoindentation measurements of electrophoretically deposited films of colloidal CdSe nanocrystals, capped by organic ligands, show the films have an elastic stiffness modulus of and exhibit viscoplasticity. This mechanical response suggests polymeric features that are attributable to the ligands. After particle cross-linking and partial ligand removal, the films exhibit more features of granularity.
Keywords
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