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Inhibiting Cracks in Latte Droplets.
Mohadese Beigtan1, Yohan Hwang2, Byung Mook Weon1,3
1Soft Matter Physics Laboratory, School of Advanced Materials Science and Engineering, SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 16419, South Korea.
Langmuir : the ACS Journal of Surfaces and Colloids
|April 7, 2023
Summary
Researchers studied latte droplet evaporation, finding milk
Area of Science:
- Fluid dynamics
- Biomaterials science
- Surface chemistry
Background:
- Evaporation of complex fluids like latte leaves intricate deposit patterns.
- Understanding biofluid dynamics is crucial due to their widespread applications.
- The precise mechanisms controlling crack formation in deposits are not fully understood.
Purpose of the Study:
- To investigate the evaporation and deposition dynamics of latte droplets.
- To identify factors influencing crack development and inhibition in droplet deposits.
- To understand the role of milk's properties in deposit pattern formation.
Main Methods:
- Observing latte droplet evaporation.
- Analyzing deposit patterns, focusing on crack formation.
- Investigating the chemical and physical interactions within the coffee-milk mixture.
Main Results:
- Milk's surfactant-like properties and interactions with coffee particles prevent crack formation.
- Uniform, crack-free deposits are achievable in coffee-milk mixtures.
- Specific intermolecular interactions are key to homogeneous deposition.
Conclusions:
- The composition of milk significantly influences the evaporation and deposition of latte.
- Understanding these dynamics enhances knowledge of complex biofluid pattern formation.
- Findings suggest potential applications for bioinks with improved printability and biocompatibility.
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