| Title: | Curvature-dependent adsorption of surfactants in water nanodroplets and nanobubbles |
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| Authors: | ID Staniscia, Fabio, Institut "Jožef Stefan" (Author)
ID Kanduč, Matej, Institut "Jožef Stefan" (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0021979725013190?via%3Dihub
 PDF - Presentation file, download (1,94 MB)
MD5: F0841E6049E3EC9B702719C39F95F996
Description: Raziskovalni podatki so na voljo na spletni strani https://zenodo.org/records/15202310.
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | Hypothesis. Surfactants, molecules that readily adsorb to liquid interfaces and reduce surface tension, are paramount to numerous natural and technological processes: from cloud formation and climate modeling to the stability and reactivity of nanodroplets and nanobubbles. While surfactant adsorption at planar interfaces has been well-studied, their behavior at curved interfaces remains much less understood. Since curvature modifies interfacial thermodynamic properties, we hypothesize that it will also affect surfactant adsorption. Simulations. To test this hypothesis, we perform molecular dynamics simulations of short-chain surfactants at water–vapor interfaces with varying curvature, examining droplets, bubbles, and planar interfaces. Findings. The outcomes reveal a systematic dependence of adsorption on curvature, which is enhanced at droplet interfaces and reduced at bubble interfaces, with the effect becoming more pronounced for surfactants with longer alkyl tails. We attribute this curvature-dependent behavior to two key mechanisms: Laplace pressure and curvature-dependent surface tension. The breakdown of these contributions allows us to obtain a quantitative understanding and to predict the influence of curvature on adsorption. |
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| Keywords: | droplets, bubbles, molecular dynamics simulation |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 22.10.2024 |
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| Article acceptance date: | 18.05.2025 |
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| Publication date: | 26.05.2025 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 1-9 |
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| Numbering: | Vol. 698, [article no.] 137928 |
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| Source: | Nizozemska |
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| PID: | 20.500.12556/DiRROS-22555  |
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| UDC: | 53 |
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| ISSN on article: | 1095-7103 |
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| DOI: | 10.1016/j.jcis.2025.137928 |
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| COBISS.SI-ID: | 238164483 |
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| Copyright: | © 2025 The Authors. |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 3. 6. 2025;
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| Publication date in DiRROS: | 04.06.2025 |
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| Views: | 452 |
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| Downloads: | 223 |
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| Metadata: |    |
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