Li, Xiaomei ; Bodziony, Francisco ; Yin, Mariana ; Marschall, Holger ; Berger, Rüdiger ; Butt, Hans-Jürgen (2023)
Kinetic drop friction.
In: Nature Communications, 14 (1)
doi: 10.1038/s41467-023-40289-8
Artikel, Bibliographie
Kurzbeschreibung (Abstract)
Liquid drops sliding on tilted surfaces is an everyday phenomenon and is important for many industrial applications. Still, it is impossible to predict the drop’s sliding velocity. To make a step forward in quantitative understanding, we measured the velocity ðUÞ, contact width ðwÞ, contact length ðLÞ, advancing ðθaÞ, and receding contact angle ðθrÞ of liquid drops sliding down inclined flat surfaces made of different materials. We find the friction force acting on sliding drops of polar and non-polar liquids with viscosities (η) ranging from 10−3 to 1 Pa * s can empirically be described by Ff ðUÞ = F0 + βwηU for a velocity range up to 0.7 ms−1. The dimensionless friction coefficient ðβÞ defined here varies from 20 to 200. It is a material parameter, specific for a liquid/surface combination. While static wetting is fully described by θa and θr, for dynamic wetting the friction coefficient is additionally necessary.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Li, Xiaomei ; Bodziony, Francisco ; Yin, Mariana ; Marschall, Holger ; Berger, Rüdiger ; Butt, Hans-Jürgen |
| Art des Eintrags: | Bibliographie |
| Titel: | Kinetic drop friction |
| Sprache: | Englisch |
| Publikationsjahr: | 2023 |
| Ort: | London |
| Verlag: | Springer Nature |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Nature Communications |
| Jahrgang/Volume einer Zeitschrift: | 14 |
| (Heft-)Nummer: | 1 |
| Kollation: | 10 Seiten |
| DOI: | 10.1038/s41467-023-40289-8 |
| URL / URN: | https://www.nature.com/articles/s41467-023-40289-8 |
| Kurzbeschreibung (Abstract): | Liquid drops sliding on tilted surfaces is an everyday phenomenon and is important for many industrial applications. Still, it is impossible to predict the drop’s sliding velocity. To make a step forward in quantitative understanding, we measured the velocity ðUÞ, contact width ðwÞ, contact length ðLÞ, advancing ðθaÞ, and receding contact angle ðθrÞ of liquid drops sliding down inclined flat surfaces made of different materials. We find the friction force acting on sliding drops of polar and non-polar liquids with viscosities (η) ranging from 10−3 to 1 Pa * s can empirically be described by Ff ðUÞ = F0 + βwηU for a velocity range up to 0.7 ms−1. The dimensionless friction coefficient ðβÞ defined here varies from 20 to 200. It is a material parameter, specific for a liquid/surface combination. While static wetting is fully described by θa and θr, for dynamic wetting the friction coefficient is additionally necessary. |
| Freie Schlagworte: | SFB1194_B07, SFB1194_C07 |
| Zusätzliche Informationen: | Artikel-ID: 4571 |
| Fachbereich(e)/-gebiet(e): | DFG-Sonderforschungsbereiche (inkl. Transregio) DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche DFG-Sonderforschungsbereiche (inkl. Transregio) > Sonderforschungsbereiche > SFB 1194: Wechselseitige Beeinflussung von Transport- und Benetzungsvorgängen |
| Hinterlegungsdatum: | 07 Dez 2023 12:45 |
| Letzte Änderung: | 07 Dez 2023 12:45 |
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