Self-lubricated spreading of nonpolar, surfactant-laden droplets.
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| Title: | Self-lubricated spreading of nonpolar, surfactant-laden droplets. |
|---|---|
| Authors: | Stern, Yotam1 (AUTHOR), Multanen, Victor1,2 (AUTHOR), Tadmor, Rafael1,3 (AUTHOR) tadmorr@bgu.ac.il, Sayag, Roiy1,2,3 (AUTHOR) roiy@bgu.ac.il |
| Source: | Journal of Fluid Mechanics. 4/10/2026, Vol. 1032, p1-9. 9p. |
| Subjects: | Solid-liquid interfaces, Surface energy, Marangoni effect, Microdroplets, Surface active agents, Fluid dynamics |
| Abstract: | While surfactants are known to affect fluid–fluid interfaces, their impact on solid–liquid interfaces is an open problem. Here, we show that surfactants carried by a spreading nonpolar droplet can dynamically alter the solid–liquid interfacial energy, leading to a new spreading regime beyond the classical Tanner's law and known Marangoni regimes. We develop a theoretical framework that combines the new spreading mechanism, governed by the solid–liquid interfacial energy gradient, together with capillarity. Experiments across twelve distinct combinations of nonpolar solvents, surfactants, and substrates confirm our theoretical predictions for the transition from Tanner's law to the newly uncovered spreading regime. Our findings provide predictive control for applications in coatings, printing, microfluidics and surface engineering. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Fluid Mechanics is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 193224712 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Self-lubricated spreading of nonpolar, surfactant-laden droplets. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Stern%2C+Yotam%22">Stern, Yotam</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Multanen%2C+Victor%22">Multanen, Victor</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Tadmor%2C+Rafael%22">Tadmor, Rafael</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> tadmorr@bgu.ac.il</i><br /><searchLink fieldCode="AR" term="%22Sayag%2C+Roiy%22">Sayag, Roiy</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<i> roiy@bgu.ac.il</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Fluid+Mechanics%22">Journal of Fluid Mechanics</searchLink>. 4/10/2026, Vol. 1032, p1-9. 9p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Solid-liquid+interfaces%22">Solid-liquid interfaces</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+energy%22">Surface energy</searchLink><br /><searchLink fieldCode="DE" term="%22Marangoni+effect%22">Marangoni effect</searchLink><br /><searchLink fieldCode="DE" term="%22Microdroplets%22">Microdroplets</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+active+agents%22">Surface active agents</searchLink><br /><searchLink fieldCode="DE" term="%22Fluid+dynamics%22">Fluid dynamics</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: While surfactants are known to affect fluid–fluid interfaces, their impact on solid–liquid interfaces is an open problem. Here, we show that surfactants carried by a spreading nonpolar droplet can dynamically alter the solid–liquid interfacial energy, leading to a new spreading regime beyond the classical Tanner's law and known Marangoni regimes. We develop a theoretical framework that combines the new spreading mechanism, governed by the solid–liquid interfacial energy gradient, together with capillarity. Experiments across twelve distinct combinations of nonpolar solvents, surfactants, and substrates confirm our theoretical predictions for the transition from Tanner's law to the newly uncovered spreading regime. Our findings provide predictive control for applications in coatings, printing, microfluidics and surface engineering. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Fluid Mechanics is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=193224712 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1017/jfm.2026.11419 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 9 StartPage: 1 Subjects: – SubjectFull: Solid-liquid interfaces Type: general – SubjectFull: Surface energy Type: general – SubjectFull: Marangoni effect Type: general – SubjectFull: Microdroplets Type: general – SubjectFull: Surface active agents Type: general – SubjectFull: Fluid dynamics Type: general Titles: – TitleFull: Self-lubricated spreading of nonpolar, surfactant-laden droplets. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Stern, Yotam – PersonEntity: Name: NameFull: Multanen, Victor – PersonEntity: Name: NameFull: Tadmor, Rafael – PersonEntity: Name: NameFull: Sayag, Roiy IsPartOfRelationships: – BibEntity: Dates: – D: 10 M: 04 Text: 4/10/2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00221120 Numbering: – Type: volume Value: 1032 Titles: – TitleFull: Journal of Fluid Mechanics Type: main |
| ResultId | 1 |
