Crack morphologies in drying suspension drops
Name
d1sm00832c.pdf
Description
Published version
Size
3.78 MB
Format
Adobe PDF
Checksum (MD5)
d71d6cd9b240cb233f99a709f8f845d8
Author(s)
Bourrianne, Philippe
Lilin, Paul
Sintès, Guillaume
Nîrca, Traian
McKinley, Gareth H.
Bischofberger, Irmgard
Date Issued
September 10, 2021
Journal
Soft Matter
Publisher
Royal Society of Chemistry (RSC)
Citation
Soft Matter, 2021,17, 8832-8837
Version
Final published version
Abstract
A drop of an aqueous suspension of nanoparticles placed on a substrate forms a solid deposit as it dries. For dilute suspensions, particles accumulate within a narrow ring at the drop edge, whereas a uniform coating covering the entire wetted area forms for concentrated suspensions. In between these extremes, we report two additional regimes characterized by non-uniform deposit thicknesses and by distinct crack morphologies. We show that both the deposit shape and the number of cracks are controlled exclusively by the initial particle volume fraction. The different regimes share a common avalanche-like crack propagation dynamics, as a result of the delamination of the deposit from the substrate.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1039/d1sm00832c
