Experimental Study of Gas Microbubbles on Oil‐Infused Wrinkled Surfaces
Abstract Lubricant‐infused surfaces (LIS) have been shown to reduce hydrodynamic drag to a greater extent than theoretically expected, making them attractive candidates for microfluidic applications. The presence of nano‐ and micro‐bubbles has been found to explain this property, but this observatio...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-06-01
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| Series: | Advanced Materials Interfaces |
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| Online Access: | https://doi.org/10.1002/admi.202500160 |
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| author | Leo James Christopher Vega‐Sánchez Priya Mehta Xuehua Zhang Chiara Neto |
| author_facet | Leo James Christopher Vega‐Sánchez Priya Mehta Xuehua Zhang Chiara Neto |
| author_sort | Leo James |
| collection | DOAJ |
| description | Abstract Lubricant‐infused surfaces (LIS) have been shown to reduce hydrodynamic drag to a greater extent than theoretically expected, making them attractive candidates for microfluidic applications. The presence of nano‐ and micro‐bubbles has been found to explain this property, but this observation is not widely acknowledged. This work investigated how the volume and distribution of lubricant in wrinkled Teflon LIS affects bubble durability. The lubricant is depleted from LIS by repeated immersion through an air–water interface, as well as by shearing, gravity drainage and spreading. The bubbles are imaged using confocal fluorescence microscopy at different levels of infused lubricant. The lubricant encasing the bubbles on LIS prevented bubbles from shrinking over several hours, compared to uninfused superhydrophobic Teflon wrinkles, in which bubbles more rapidly shrunk in height, typically within 30 min. The size of bubbles is independent of lubricant volume, likely due to lubricant redistribution underwater. These findings point toward the possibility of a short‐term stabilization of bubbles on structured surfaces for drag reduction applications through the use of lubricant. |
| format | Article |
| id | doaj-art-9b05dcebbc894df19250a891512d3dec |
| institution | OA Journals |
| issn | 2196-7350 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Materials Interfaces |
| spelling | doaj-art-9b05dcebbc894df19250a891512d3dec2025-08-20T02:38:18ZengWiley-VCHAdvanced Materials Interfaces2196-73502025-06-011212n/an/a10.1002/admi.202500160Experimental Study of Gas Microbubbles on Oil‐Infused Wrinkled SurfacesLeo James0Christopher Vega‐Sánchez1Priya Mehta2Xuehua Zhang3Chiara Neto4School of Chemistry and University of Sydney Nano Institute The University of Sydney Sydney NSW 2006 AustraliaSchool of Electromechanical Engineering Costa Rica Institute of Technology Campus Cartago 159‐7050 Costa RicaSchool of Chemistry and University of Sydney Nano Institute The University of Sydney Sydney NSW 2006 AustraliaDepartment of Chemical & Materials Engineering University of Alberta Edmonton Alberta T6G1H9 CanadaSchool of Chemistry and University of Sydney Nano Institute The University of Sydney Sydney NSW 2006 AustraliaAbstract Lubricant‐infused surfaces (LIS) have been shown to reduce hydrodynamic drag to a greater extent than theoretically expected, making them attractive candidates for microfluidic applications. The presence of nano‐ and micro‐bubbles has been found to explain this property, but this observation is not widely acknowledged. This work investigated how the volume and distribution of lubricant in wrinkled Teflon LIS affects bubble durability. The lubricant is depleted from LIS by repeated immersion through an air–water interface, as well as by shearing, gravity drainage and spreading. The bubbles are imaged using confocal fluorescence microscopy at different levels of infused lubricant. The lubricant encasing the bubbles on LIS prevented bubbles from shrinking over several hours, compared to uninfused superhydrophobic Teflon wrinkles, in which bubbles more rapidly shrunk in height, typically within 30 min. The size of bubbles is independent of lubricant volume, likely due to lubricant redistribution underwater. These findings point toward the possibility of a short‐term stabilization of bubbles on structured surfaces for drag reduction applications through the use of lubricant.https://doi.org/10.1002/admi.202500160gas nucleationlubricant‐infused surfaceslubricant depletionnanobubblessuperhydrophobicity |
| spellingShingle | Leo James Christopher Vega‐Sánchez Priya Mehta Xuehua Zhang Chiara Neto Experimental Study of Gas Microbubbles on Oil‐Infused Wrinkled Surfaces Advanced Materials Interfaces gas nucleation lubricant‐infused surfaces lubricant depletion nanobubbles superhydrophobicity |
| title | Experimental Study of Gas Microbubbles on Oil‐Infused Wrinkled Surfaces |
| title_full | Experimental Study of Gas Microbubbles on Oil‐Infused Wrinkled Surfaces |
| title_fullStr | Experimental Study of Gas Microbubbles on Oil‐Infused Wrinkled Surfaces |
| title_full_unstemmed | Experimental Study of Gas Microbubbles on Oil‐Infused Wrinkled Surfaces |
| title_short | Experimental Study of Gas Microbubbles on Oil‐Infused Wrinkled Surfaces |
| title_sort | experimental study of gas microbubbles on oil infused wrinkled surfaces |
| topic | gas nucleation lubricant‐infused surfaces lubricant depletion nanobubbles superhydrophobicity |
| url | https://doi.org/10.1002/admi.202500160 |
| work_keys_str_mv | AT leojames experimentalstudyofgasmicrobubblesonoilinfusedwrinkledsurfaces AT christophervegasanchez experimentalstudyofgasmicrobubblesonoilinfusedwrinkledsurfaces AT priyamehta experimentalstudyofgasmicrobubblesonoilinfusedwrinkledsurfaces AT xuehuazhang experimentalstudyofgasmicrobubblesonoilinfusedwrinkledsurfaces AT chiaraneto experimentalstudyofgasmicrobubblesonoilinfusedwrinkledsurfaces |