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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.7b04045
|2 doi
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|a eng
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| 100 |
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|a Mamalis, Dimitrios
|e verfasserin
|4 aut
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| 245 |
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|a Nonisothermal Spreading Dynamics of Self-Rewetting Droplets
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 03.05.2018
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|a Date Revised 03.05.2018
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a We experimentally studied the spreading dynamics of binary alcohol mixtures (and pure liquids for reference) deposited on a heated substrate in a partially wetting situation under nonisothermal conditions. We show that the spreading mechanism of an evaporating droplet exhibits a power-law growth with early-stage exponents that depend strongly and nonmonotonically on the substrate temperature. Moreover, we investigated the temporal and spatial thermal dynamics in the droplet using infrared thermography, revealing the existence of unique thermal patterns due to thermal and/or solutal instabilities, which lead to surface tension gradients, namely the Marangoni effect. Our key findings are that the temperature of the substrate drastically affects the early-stage inertial-capillary spreading regime owing to the nonmonotonic surface tension-temperature dependence of the self-rewetting liquids. At later stages of wetting, the spreading dynamics enters the viscous-capillary dominated regime, with the characteristic low kinetics mirroring the behavior of pure liquids
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Koutsos, Vasileios
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Sefiane, Khellil
|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 34(2018), 5 vom: 06. Feb., Seite 1916-1931
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|x 1520-5827
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|g volume:34
|g year:2018
|g number:5
|g day:06
|g month:02
|g pages:1916-1931
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|u http://dx.doi.org/10.1021/acs.langmuir.7b04045
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