Buckling of a drying colloidal drop

Soft Matter
Mahesh S Tirumkudulu

Abstract

It is well known that drying drops of colloidal dispersions undergo complex morphological transitions involving buckling of a particle-packed outer shell during drying. Although capillary stresses generated during drying have been identified as the cause for buckling, the exact conditions for buckling and its relation to the particle size, rigidity, and nature of packing have not been understood. Here, we derive explicit expressions for the critical capillary pressure for buckling of droplets based on the mechanical properties of the particle network formed during drying and the conditions under which buckling can be avoided. We anticipate our results to form the basis for design of formulations for the pharmaceutical, food and ceramics industry.

References

Feb 9, 2005·Physical Review Letters·N TsapisD A Weitz
May 18, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·Mahesh S Tirumkudulu, William B Russel
Jan 17, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·William B RusselWeining Man
Jul 7, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Arijit Sarkar, Mahesh S Tirumkudulu
Feb 7, 2013·Physical Review Letters·Lucas GoehringAlexander F Routh
Sep 13, 2014·Physical Review Letters·Fanlong MengZhongcan Ouyang
Nov 12, 2015·Drug Development and Industrial Pharmacy·M R LauroG Puglisi
Jan 19, 2016·Advanced Drug Delivery Reviews·Lan ChenHak-Kim Chan
Nov 15, 2016·Soft Matter·Saikat Roy, Mahesh S Tirumkudulu

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Citations

Oct 1, 2020·Reports on Progress in Physics·Xiaoliang JiDuyang Zang

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