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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1021/acs.langmuir.0c02272
|2 doi
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|a DE-627
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|a eng
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| 100 |
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|a Günay, A Alperen
|e verfasserin
|4 aut
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|a Droplet Evaporation Dynamics of Low Surface Tension Fluids Using the Steady Method
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|c 2020
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 24.11.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a Droplet evaporation governs many heat- and mass-transfer processes germane in nature and industry. In the past 3 centuries, transient techniques have been developed to characterize the evaporation of sessile droplets. These methods have difficulty in reconciling transient effects induced by the droplet shape and size changes during evaporation. Furthermore, investigation of evaporation of microdroplets residing on wetting substrates, or fluids having low surface tensions (<30 mN/m), is difficult to perform using established approaches. Here, we use the steady method to study the microdroplet evaporation dynamics of low surface tension liquids. We start by employing the steady method to benchmark with water droplets having base radii (20 ≤ Rb ≤ 260 μm), apparent advancing contact angle (45° ≤ θa,app ≤ 162°), surface temperature (30 < Ts < 60 °C), and relative humidity (40% < ϕ < 60%). Following validation, evaporation of ethanol (≈22 mN/m), hexane (≈18 mN/m), and dodecane (≈25 mN/m) were studied for 90 ≤ Rb ≤ 400 μm and 10 < Ts < 25 °C. We elucidate the mechanisms governing the observed behavior using heat and mass transport scaling analysis during evaporation, demonstrating our steady technique to be particularly advantageous for microdroplets, where Marangoni and buoyant forces are negligible. Our work not only elucidates the droplet evaporation mechanisms of low surface tension liquids but also demonstrates the steady method as a means to study phase change processes
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|a Journal Article
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|a Gnadt, Marisa
|e verfasserin
|4 aut
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|a Sett, Soumyadip
|e verfasserin
|4 aut
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|a Vahabi, Hamed
|e verfasserin
|4 aut
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|a Kota, Arun K
|e verfasserin
|4 aut
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|a Miljkovic, Nenad
|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 36(2020), 46 vom: 24. Nov., Seite 13860-13871
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:36
|g year:2020
|g number:46
|g day:24
|g month:11
|g pages:13860-13871
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|u http://dx.doi.org/10.1021/acs.langmuir.0c02272
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