The interplay of crack hopping, delamination and interface failure in drying nanoparticle films

Yang, Bin and Sharp, James S. and Smith, Mike I. (2016) The interplay of crack hopping, delamination and interface failure in drying nanoparticle films. Scientific Reports, 6 . e32296. ISSN 2045-2322

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Abstract

Films formed through the drying of nanoparticle suspensions release the build-up of strain through a variety of different mechanisms including shear banding, crack formation and delamination. Here we show that important connections exist between these different phenomena: delamination depends on the dynamics of crack hopping, which in turn is influenced by the presence of shear bands. We also show that delamination does not occur uniformly across the film. As cracks hop they locally initiate the delamination of the film which warps with a timescale much longer than that associated with the hopping of cracks. The motion of a small region of the delamination front, where the shear component of interfacial crack propagation is believed to be enhanced, results in the deposition of a complex zig-zag pattern on the supporting substrate.

Item Type: Article
Schools/Departments: University of Nottingham UK Campus > Faculty of Science > School of Physics and Astronomy
Identification Number: https://doi.org/10.1038/srep32296
Depositing User: Eprints, Support
Date Deposited: 01 Sep 2016 08:30
Last Modified: 13 Sep 2016 12:26
URI: http://eprints.nottingham.ac.uk/id/eprint/35732

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