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231226s2022 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.2c00385
|2 doi
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|a pubmed24n1133.xml
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|a (NLM)35467881
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|a DE-627
|b ger
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|e rakwb
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|a eng
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|a Abouei Mehrizi, Abbasali
|e verfasserin
|4 aut
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|a Spectacular Behavior of a Viscoelastic Droplet Impinging on a Superhydrophobic Mesh
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|c 2022
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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
|b cr
|2 rdacarrier
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|a Date Revised 18.05.2022
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Spray formation using the droplet impact on superhydrophobic mesh surfaces is particularly important because of its application in different industries. The present study revealed that adding a trivial amount of the poly(ethylene oxide) (PEO) polymer to a water droplet can considerably change the impact phenomena on the superhydrophobic mesh surfaces and suppress the spray formation. Droplet rebound is observed only in a narrow range of impact velocities of PEO aqueous droplets when the tiny filaments still connect the surface and droplet. Rebound suppression and deposition of the PEO aqueous droplet is attributed to the higher interaction between the polymer chains and the superhydrophobic mesh surface. After a critical impact velocity and We number which is independent of the PEO concentration, the liquid penetrates the mesh pores. The penetrated liquid formed the ligaments that grow until they reach the maximum length and surprisingly retract back to the mesh surface and the mother droplet. The ligaments destabilized at low PEO concentrations (c = 0.5 and 1 g/L) and a mesh opening size of H = 357 μm to the crest swell droplets when the droplet size is reduced by increasing the impact velocity. The ligament fragmentation and droplet detachment are observed only at high impact velocities when c = 0.5 and 1 g/L and H = 357 μm. The result shows that the PEO additive does not significantly affect the maximum spreading diameter. An empirical model to calculate the maximum spreading factor is developed
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|a Journal Article
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1 |
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|a Lin, Shiji
|e verfasserin
|4 aut
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1 |
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|a Sun, Lijie
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Longquan
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 38(2022), 19 vom: 17. Mai, Seite 6106-6115
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
1 |
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|g volume:38
|g year:2022
|g number:19
|g day:17
|g month:05
|g pages:6106-6115
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|u http://dx.doi.org/10.1021/acs.langmuir.2c00385
|3 Volltext
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