Projects per year
Abstract
In order to reveal the underlying mechanism of surface microstructure-determined wetting states, this paper adopted Volume of Fluid (VOF) method to investigate the dynamic behaviours of water droplets impacting on surfaces with different structures at low and high Weber numbers. The simulation results showed that the high and stable pressure of air pockets is critical for the formation of the superhydrophobicity. A superhydrophobic substrate will result in shorter recoiling time and longer rebound time for water droplet than the hydrophobic substrate. Furthermore, superhydrophobic surface resulted in higher kinetic energy for water droplet than hydrophobic surfaces, which is the underlying mechanism of microstructure-enabled self-cleaning function. High-speed camera tests of laser processed surface microstructures were conducted to validate the observation in dynamic impacting simulation. The results in both high-speed camera testing and VOF simulation proved that water droplet will have a lower adhesion force when impacting superhydrophobic surface than hydrophobic surface.
Original language | English |
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Article number | 123743 |
Number of pages | 16 |
Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
Volume | 580 |
Early online date | 8 Aug 2019 |
DOIs | |
Publication status | Published - 5 Nov 2019 |
Keywords
- superhydrophobic
- VOF simulation
- contact angle
- high-speed camera
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Dive into the research topics of 'Dynamic behaviours of water droplets impacting on laser ablated surfaces'. Together they form a unique fingerprint.Projects
- 4 Finished
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Nanomanufactuirng mechanism while using nanostructured atomic force microscope (AFM) probes (Newton Mobility Grant))
Luo, X. (Principal Investigator)
31/03/19 → 30/03/22
Project: Research
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European Training Network on "Process Fingerprint for Zero-defec Net-shape MICROMANufacturing" H2020 MSCA ETN)
Luo, X. (Principal Investigator) & Qin, Y. (Co-investigator)
European Commission - Horizon Europe + H2020
1/10/15 → 30/09/19
Project: Research
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Micro-3D: Miniature Flexible & Reconfigurable Manufacturing System for 3D Micro-products
Luo, X. (Principal Investigator), Ion, W. (Co-investigator), Qin, Y. (Co-investigator), Jagadeesan, A. P. (Researcher) & Zeng, Q. (Researcher)
EPSRC (Engineering and Physical Sciences Research Council)
1/07/13 → 31/12/17
Project: Research
Datasets
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Data for: "Dynamic behaviours of water droplets impacting on laser ablated surfaces"
Cai, Y. (Creator) & Luo, X. (Supervisor), University of Strathclyde, 2 Aug 2019
DOI: 10.15129/32d18bb9-884b-4416-92c1-1b5919a5869c
Dataset