Droplet Spreading and Adhesion on Spherical Surfaces
- Zhanglei Zhu
Zhanglei ZhuDepartment of Materials Science and Engineering, Michigan Technological University, Houghton, Michigan 49931, United StatesCollege of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Xi’an, Shaanxi 710054, ChinaMore by Zhanglei Zhu
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- Youhua Jiang*
Youhua Jiang*Email: [email protected]Department of Mechanical Engineering, Guangdong Technion − Israel Institute of Technology, Shantou, Guangdong 515063, ChinaMore by Youhua Jiang
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- Jaroslaw W. Drelich*
Jaroslaw W. Drelich*Email: [email protected]Department of Materials Science and Engineering, Michigan Technological University, Houghton, Michigan 49931, United StatesMore by Jaroslaw W. Drelich
Abstract
Adhesion of a liquid droplet to a solid surface is a result of solid surface interactions with surrounding fluids, affected by its wettability and morphology. Unfortunately, the direct measurements of adhesion forces are rarely reported in the scientific literature, especially for solids with curvatures. In this study, by using a high-sensitivity microelectronic mechanical balance which vertically deposits and then pulls liquid droplets, the spreading and adhesion forces for water and ethylene glycol droplets on spherical surfaces of polyethylene terephthalate (PET) with radii of curvature from 2 to 8 mm were recorded. Results show that the surface curvature does not affect the advancing and most-stable contact angles but affects the extent of spreading and maximum adhesion forces. The solid surface curvature affects both surface tension and Laplace pressure forces at the spreading point, whereas it mainly affects the Laplace pressure force at the maximum adhesion point.
Cited By
This article is cited by 4 publications.
- Shiyu Zhang, Lingzhe Zhao, Meike Yu, Jinwei Guo, Chuntian Liu, Chunyuan Zhu, Meirong Zhao, Yinguo Huang, Yelong Zheng. Measurement Methods for Droplet Adhesion Characteristics and Micrometer-Scale Quantification of Contact Angle on Superhydrophobic Surfaces: Challenges and Opportunities. Langmuir 2024, Article ASAP.
- Shiyu Zhang, Meirong Zhao, Yinguo Huang, Yukai Sun, Chuntian Liu, Meike Yu, Yelong Zheng. Measuring the Adhesion Force and the Spreading Radius between Droplets and a Solid Surface during Short-Time Spreading. Langmuir 2023, 39 (14) , 5179-5186. https://doi.org/10.1021/acs.langmuir.3c00240
- Lei Liu, Liang Lei. Contact Angle on Rough Curved Surfaces and Its Implications in Porous Media. Langmuir 2023, 39 (12) , 4507-4517. https://doi.org/10.1021/acs.langmuir.3c00213
- Youhua Jiang, Jaroslaw W Drelich. Fluid droplet spreading and adhesion studied with a microbalance: a review. Surface Innovations 2022, 6 , 1-14. https://doi.org/10.1680/jsuin.22.01050