Effects of liquid surface tension on gas capillaries and capillary forces at superamphiphobic surfaces
Abstract The formation of a bridging gas capillary between superhydrophobic surfaces in water gives rise to strongly attractive interactions ranging up to several micrometers on separation. However, most liquids used in materials research are oil-based or contain surfactants. Superamphiphobic surfac...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-023-33875-9 |
| _version_ | 1797832129325826048 |
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| author | Mimmi Eriksson Per M. Claesson Mikael Järn Viveca Wallqvist Mikko Tuominen Michael Kappl Hannu Teisala Doris Vollmer Joachim Schoelkopf Patrick A. C. Gane Jyrki M. Mäkelä Agne Swerin |
| author_facet | Mimmi Eriksson Per M. Claesson Mikael Järn Viveca Wallqvist Mikko Tuominen Michael Kappl Hannu Teisala Doris Vollmer Joachim Schoelkopf Patrick A. C. Gane Jyrki M. Mäkelä Agne Swerin |
| author_sort | Mimmi Eriksson |
| collection | DOAJ |
| description | Abstract The formation of a bridging gas capillary between superhydrophobic surfaces in water gives rise to strongly attractive interactions ranging up to several micrometers on separation. However, most liquids used in materials research are oil-based or contain surfactants. Superamphiphobic surfaces repel both water and low-surface-tension liquids. To control the interactions between a superamphiphobic surface and a particle, it needs to be resolved whether and how gas capillaries form in non-polar and low-surface-tension liquids. Such insight will aid advanced functional materials development. Here, we combine laser scanning confocal imaging and colloidal probe atomic force microscopy to elucidate the interaction between a superamphiphobic surface and a hydrophobic microparticle in three liquids with different surface tensions: water (73 mN m−1), ethylene glycol (48 mN m−1) and hexadecane (27 mN m−1). We show that bridging gas capillaries are formed in all three liquids. Force-distance curves between the superamphiphobic surface and the particle reveal strong attractive interactions, where the range and magnitude decrease with liquid surface tension. Comparison of free energy calculations based on the capillary menisci shapes and the force measurements suggest that under our dynamic measurements the gas pressure in the capillary is slightly below ambient. |
| first_indexed | 2024-04-09T14:03:55Z |
| format | Article |
| id | doaj.art-f674bf0c1f9a4d6293818e09c6597f95 |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-04-09T14:03:55Z |
| publishDate | 2023-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-f674bf0c1f9a4d6293818e09c6597f952023-05-07T11:12:06ZengNature PortfolioScientific Reports2045-23222023-04-0113111310.1038/s41598-023-33875-9Effects of liquid surface tension on gas capillaries and capillary forces at superamphiphobic surfacesMimmi Eriksson0Per M. Claesson1Mikael Järn2Viveca Wallqvist3Mikko Tuominen4Michael Kappl5Hannu Teisala6Doris Vollmer7Joachim Schoelkopf8Patrick A. C. Gane9Jyrki M. Mäkelä10Agne Swerin11RISE Research Institutes of SwedenDivision of Surface and Corrosion Science, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of TechnologyRISE Research Institutes of SwedenRISE Research Institutes of SwedenRISE Research Institutes of SwedenDepartment of Physics at Interfaces, Max Planck Institute for Polymer ResearchDepartment of Physics at Interfaces, Max Planck Institute for Polymer ResearchDepartment of Physics at Interfaces, Max Planck Institute for Polymer ResearchOmya International AGDepartment of Bioproducts and Biosystems, School of Chemical Engineering, Aalto UniversityPhysics Unit, Aerosol Physics Laboratory, Tampere UniversityDivision of Surface and Corrosion Science, Department of Chemistry, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of TechnologyAbstract The formation of a bridging gas capillary between superhydrophobic surfaces in water gives rise to strongly attractive interactions ranging up to several micrometers on separation. However, most liquids used in materials research are oil-based or contain surfactants. Superamphiphobic surfaces repel both water and low-surface-tension liquids. To control the interactions between a superamphiphobic surface and a particle, it needs to be resolved whether and how gas capillaries form in non-polar and low-surface-tension liquids. Such insight will aid advanced functional materials development. Here, we combine laser scanning confocal imaging and colloidal probe atomic force microscopy to elucidate the interaction between a superamphiphobic surface and a hydrophobic microparticle in three liquids with different surface tensions: water (73 mN m−1), ethylene glycol (48 mN m−1) and hexadecane (27 mN m−1). We show that bridging gas capillaries are formed in all three liquids. Force-distance curves between the superamphiphobic surface and the particle reveal strong attractive interactions, where the range and magnitude decrease with liquid surface tension. Comparison of free energy calculations based on the capillary menisci shapes and the force measurements suggest that under our dynamic measurements the gas pressure in the capillary is slightly below ambient.https://doi.org/10.1038/s41598-023-33875-9 |
| spellingShingle | Mimmi Eriksson Per M. Claesson Mikael Järn Viveca Wallqvist Mikko Tuominen Michael Kappl Hannu Teisala Doris Vollmer Joachim Schoelkopf Patrick A. C. Gane Jyrki M. Mäkelä Agne Swerin Effects of liquid surface tension on gas capillaries and capillary forces at superamphiphobic surfaces Scientific Reports |
| title | Effects of liquid surface tension on gas capillaries and capillary forces at superamphiphobic surfaces |
| title_full | Effects of liquid surface tension on gas capillaries and capillary forces at superamphiphobic surfaces |
| title_fullStr | Effects of liquid surface tension on gas capillaries and capillary forces at superamphiphobic surfaces |
| title_full_unstemmed | Effects of liquid surface tension on gas capillaries and capillary forces at superamphiphobic surfaces |
| title_short | Effects of liquid surface tension on gas capillaries and capillary forces at superamphiphobic surfaces |
| title_sort | effects of liquid surface tension on gas capillaries and capillary forces at superamphiphobic surfaces |
| url | https://doi.org/10.1038/s41598-023-33875-9 |
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