Drying complex fluids is a common phenomenon where a liquid phase transforms into a dense or porous solid. This transformation involves several physical processes, such as the diffusion of liquid molecules into the surrounding atmosphere and the movement of dispersed phases through evaporation-driven flow. As a result, the solute forming a dried deposit exhibits unique patterns and often displays structural defects like desiccation cracks, buckling, or wrinkling. Various drying configurations have been utilized to study the drying of colloids, the process of their consolidation, and fluid-flow dynamics. This review focuses on the drying of colloids and the related phenomena, specifically the drying-induced effects observed during sessile drop drying. We first present a theoretical overview of the physics of drying pure and binary liquid droplets, followed by drying colloidal droplets. Then, we explain the phenomena of pattern formation and desiccation cracks. Additionally, the article briefly describes the impact of evaporation-driven flows on the accumulation of particles and various physical parameters that influence deposit patterns and cracks.
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June 2023
Review Article|
June 07 2023
Physics of drying complex fluid drop: Flow field, pattern formation, and desiccation cracks
Special Collection:
Paint and Coating Physics
Ranajit Mondal
;
Ranajit Mondal
a)
(Conceptualization, Formal analysis, Investigation, Writing – original draft, Writing – review & editing)
1
Department of Chemical Engineering, Indian Institute of Technology Hyderabad
, Kandi 502 284, Telangana, India
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Hisay Lama
;
Hisay Lama
a)
(Conceptualization, Formal analysis, Funding acquisition, Investigation, Writing – original draft, Writing – review & editing)
2
Department of Physics, The University of Tokyo
, Tokyo 113-8654, Japan
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Kirti Chandra Sahu
Kirti Chandra Sahu
b)
(Conceptualization, Funding acquisition, Investigation, Writing – original draft, Writing – review & editing)
1
Department of Chemical Engineering, Indian Institute of Technology Hyderabad
, Kandi 502 284, Telangana, India
b)Author to whom correspondence should be addressed: ksahu@che.iith.ac.in
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b)Author to whom correspondence should be addressed: ksahu@che.iith.ac.in
a)
Electronic addresses: ranajit@che.iith.ac.in and hisaylama@noneq.phys.s.u-tokyo.ac.jp
Note: This paper is part of the special topic, Paint and Coating Physics.
Physics of Fluids 35, 061301 (2023)
Article history
Received:
April 11 2023
Accepted:
May 19 2023
Citation
Ranajit Mondal, Hisay Lama, Kirti Chandra Sahu; Physics of drying complex fluid drop: Flow field, pattern formation, and desiccation cracks. Physics of Fluids 1 June 2023; 35 (6): 061301. https://doi.org/10.1063/5.0153682
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