Dynamics of fracture in drying suspensions.
نویسندگان
چکیده
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.
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ورودعنوان ژورنال:
- Langmuir : the ACS journal of surfaces and colloids
دوره 22 17 شماره
صفحات -
تاریخ انتشار 2006