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Onset and propagation of desiccation cracks in thin suspension layers
Onset and propagation of desiccation cracks in thin suspension layers
We modeled crack formation in thin layers of aging clay suspensions by combining the poroelastic model and the Griffith's criterion for crack formation. This model was extremely successful in correctly estimating fracture energies of clay layers whose crack onset times were recorded visually and elasticities were estimated using microindentation in an atomic force microscope. We even computed the strain fields during drying using digital image correlation.
Link to paper:
https://pubs.aip.org/aip/pof/article-abstract/36/11/113114/3319572/Manipulating-crack-formation-in-air-dried-clay?redirectedFrom=fulltext
Evaporation-induced self-assembly of gold nanoparticles
Evaporation-induced self-assembly of gold nanoparticles
We have performed detailed studies on the coffee stain morphologies formed by the evaporation of a gold nanorod suspension droplet, the effect of electric field on the domain sizes, the correlations between morphologies and drying kinetics and the effext of surfactant on the above behaviours
Interfacial instabilities involving non-Newtonian fluids
Interfacial instabilities involving non-Newtonian fluids
Pattern selection during the displacement of aging clay suspensions by fluids of different wettabilities
Links to relevant papers:
Our recent invited review article:
Kinetics of pattern formation during the displacement of aging clay suspensions by fluids of different wettabilities
We reported the emergence of transient reverse fingers at the air-cornstarch interface during the miscible displacement of aqueous cornstarch suspensions
For an exhaustive list of our publications on this topic, please visit here
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