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240507s2024 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.4c00913
|2 doi
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|a eng
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| 100 |
1 |
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|a Gao, Shu-Rong
|e verfasserin
|4 aut
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| 245 |
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|a Bouncing Dynamics of Drops' Successive Off-Center Impact
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|c 2024
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Revised 21.05.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Bouncing dynamics of a trailing drop off-center impacting a leading drop with varying time intervals and Weber numbers are investigated experimentally. Whether the trailing drop impacts during the spreading or receding process of the leading drop is determined by the time interval. For a short time interval of 0.15 ≤ Δt* ≤ 0.66, the trailing drop impacts during the spreading of the leading drop, and the drops completely coalesce and rebound; for a large time interval of 0.66 < Δt* ≤ 2.21, the trailing drop impacts during the receding process, and the drops partially coalesce and rebound. Whether the trailing drop directly impacts the surface or the liquid film of the leading drop is determined by the Weber number. The trailing drop impacts the surface directly at moderate Weber numbers of 16.22 ≤ We ≤ 45.42, while it impacts the liquid film at large Weber numbers of 45.42 < We ≤ 64.88. Intriguingly, when the trailing drop impacts the surface directly or the receding liquid film, the contact time increases linearly with the time interval but independent of the Weber number; when the trailing drop impacts the spreading liquid film, the contact time suddenly increases, showing that the force of the liquid film of the leading drop inhibits the receding of the trailing drop. Finally, a theoretical model of the contact time for the drops is established, which is suitable for different impact scenarios of the successive off-center impact. This study provides a quantitative relationship to calculate the contact time of drops successively impacting a superhydrophobic surface, facilitating the design of anti-icing surfaces
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|a Journal Article
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1 |
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|a Jia, Qi-Hui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Zhe
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Shi, Shi-Hua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Yi-Feng
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zheng, Shao-Fei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Yan-Ru
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hsu, Shu-Han
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yan, Wei-Mon
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Xiao-Dong
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 40(2024), 20 vom: 21. Mai, Seite 10759-10768
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:40
|g year:2024
|g number:20
|g day:21
|g month:05
|g pages:10759-10768
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| 856 |
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|u http://dx.doi.org/10.1021/acs.langmuir.4c00913
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