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Increasing aspect ratio of particles suppresses buckling in shells formed by drying suspensions

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Abstract

Solvent evaporation in unpinned droplets of colloidal suspensions leads to the formation of porous shells which buckle under the pressure differential imposed by drying. We investigate the role of aspect ratio of rod-shaped particles in suppressing such buckling instabilities. Longer, thinner rods pack into permeable shells with consequently lower Darcy's pressure and thus avoid buckling.

Graphical abstract: Increasing aspect ratio of particles suppresses buckling in shells formed by drying suspensions

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Article information


Submitted
11 Aug 2020
Accepted
15 Sep 2020
First published
15 Sep 2020

Soft Matter, 2020, Advance Article
Article type
Communication

Increasing aspect ratio of particles suppresses buckling in shells formed by drying suspensions

A. Al Harraq and B. Bharti, Soft Matter, 2020, Advance Article , DOI: 10.1039/D0SM01467B

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