| Autor: |
E R, Dufresne, D J, Stark, N A, Greenblatt, J X, Cheng, J W, Hutchinson, L, Mahadevan, D A, Weitz |
| Rok vydání: |
2006 |
| Zdroj: |
Langmuir : the ACS journal of surfaces and colloids. 22(17) |
| ISSN: |
0743-7463 |
| Popis: |
We investigate the dynamics of fracture in drying films of colloidal silica. Water loss quenches the nanoparticle dispersions to form a liquid-saturated elastic network of particles that relieves drying-induced strain by cracking. These cracks display intriguing intermittent motion originating from the deformation of arrested crack tips and aging of the elastic network. The dynamics of a single crack exhibits a universal evolution, described by a balance of the driving elastic power with the sum of interfacial power and the viscous dissipation rate of flowing interstitial fluid. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
