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231224s2016 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.6b01509
|2 doi
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|a eng
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|a Nonomura, Yoshimune
|e verfasserin
|4 aut
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|a Penetration Behavior of a Water Droplet into a Cylindrical Hydrophobic Pore
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|c 2016
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|a Text
|b txt
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|a ƒaComputermedien
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|a Date Completed 18.07.2018
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|a Date Revised 18.07.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Understanding the dynamics with which a water droplet penetrates a pore is important because of its relationship with transfer phenomena in plants and animals. Using a high-speed camera, we observe the penetration processes of a water droplet into a cylindrical pore on a silicone substrate. The force on the water droplet is generated by dropping the substrate plus water droplet from a height of several centimeters onto an acrylic resin substrate. The penetration characteristics depend on pore size Dp, height of release of a drop h, and the viscosity of the droplet liquid and are classified into the following patterns: spreading, penetration, and breaking. During the process of relaxation to the steady state, various interesting deformation or oscillation phenomena occur. Based on high-speed images, we estimate the interfacial energy ΔG during the intermediate states and find an energy barrier ΔG = 1 × 10(-7) J when Dp = 1.0 mm and h = 15 mm for the spreading pattern and ΔG = 0.7 × 10(-7) J when Dp = 1.0 mm and h = 10 mm for the penetration pattern. Finally, based on a theoretical model considering the driving and suppression factors, we explain the experimentally obtained phase diagram including the separation, penetration, and breaking patterns
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Tanaka, Tomoya
|e verfasserin
|4 aut
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|a Mayama, Hiroyuki
|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 1999
|g 32(2016), 25 vom: 28. Juni, Seite 6328-34
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|x 1520-5827
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|g volume:32
|g year:2016
|g number:25
|g day:28
|g month:06
|g pages:6328-34
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|u http://dx.doi.org/10.1021/acs.langmuir.6b01509
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