ArticleThe European physical journal. E, Soft matter2016
Surface roughness induced cracks of the deposition film from drying colloidal suspension.
Article in The European physical journal. E, Soft matter, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Cracking to curling transition in drying colloidal films.The European physical journal. E, Soft matter · 2020Article
- Arcuate wrinkling on stiff film/compliant substrate induced by thrust force with a controllable micro-probe.The European physical journal. E, Soft matter · 2018Article
- Topical issue on Wetting and Drying: Physics and Pattern Formation.The European physical journal. E, Soft matter · 2016Article
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Authors and funding
6 authors.
Funding
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Abstract
We investigate crack formation in deposition films from drying colloidal suspension drops, by varying the roughness and texture of the substrate. The experimental results indicate that the crack number or crack spacing presents a general dependence on the substrate roughness, despite the orientation of the substrate textures. Interestingly, the crack spacing decreases with the increase of the roughness. Two possible mechanisms are proposed to understand the dependence of the cracks on roughness. Firstly, the concentration reduction of the drying suspension due to collecting colloidal particles from the substrate textures decreases the crack spacing. Secondly, stress concentration resulting from the defects (the notches in textures) in the dried deposition enhances crack formation. However, a quantitative estimation by the calculation of the stress concentrating factors reveals that the notch of the substrate textures dominates crack variation. The results here bring forth a practical method for controlling the crack orientation and suppression, and a potential application to crack-free coatings, films and paintings during the drying of complex fluids.
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