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Effects of liquid surface tension on gas capillaries and capillary forces at superamphiphobic surfaces

Eriksson, Mimmi (författare)
KTH,RISE,RISE Research Institutes of Sweden, Sweden; KTH Royal Institute of Technology, Sweden,Yt- och korrosionsvetenskap,RISE Res Inst Sweden, S-11486 Stockholm, Sweden.
Claesson, Per M. (författare)
KTH,Yt- och korrosionsvetenskap,KTH Royal Institute of Technology, Sweden
Järn, Mikael (författare)
RISE,Material- och ytdesign,RISE Res Inst Sweden, S-11486 Stockholm, Sweden.,RISE Research Institutes of Sweden, Sweden
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Wallqvist, Viveca (författare)
RISE,Material- och ytdesign,RISE Res Inst Sweden, S-11486 Stockholm, Sweden.,RISE Research Institutes of Sweden, Sweden
Tuominen, Mikko (författare)
RISE,RISE Res Inst Sweden, S-11486 Stockholm, Sweden.,RISE Research Institutes of Sweden, Sweden
Kappl, Michael (författare)
Max Planck Institute for Polymer Research, Germany,Max Planck Inst Polymer Res, Dept Phys Interfaces, D-55128 Mainz, Germany.
Teisala, Hannu (författare)
Max Planck Institute for Polymer Research, Germany,Max Planck Inst Polymer Res, Dept Phys Interfaces, D-55128 Mainz, Germany.
Vollmer, Doris (författare)
Max Planck Institute for Polymer Research, Germany,Max Planck Inst Polymer Res, Dept Phys Interfaces, D-55128 Mainz, Germany.
Schoelkopf, Joachim (författare)
Omya International AG, Switzerland,Omya Int AG, CH-4665 Oftringen, Switzerland.
Gane, Patrick A. C. (författare)
Aalto University, Finland; University of Belgrade, Serbia,Aalto Univ, Sch Chem Engn, Dept Bioprod & Biosyst, Aalto 00076, Finland.;Univ Belgrade, Fac Technol & Met, Karnegijeva 4, Belgrade 11000, Serbia.
Mäkelä, Jyrki M. (författare)
Tampere University, Finland,Tampere Univ, Phys Unit, Aerosol Phys Lab, Tampere 33014, Finland.
Swerin, Agne (författare)
KTH,Karlstads universitet,Institutionen för ingenjörs- och kemivetenskaper (from 2013),KTH Royal Institute of Technology, Sweden; Karlstad University, Sweden,Yt- och korrosionsvetenskap,Karlstad Univ, Dept Engn & Chem Sci, S-65188 Karlstad, Sweden.
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 (creator_code:org_t)
Springer Nature, 2023
2023
Engelska.
Ingår i: Scientific Reports. - : Springer Nature. - 2045-2322. ; 13:1
Relaterad länk:
https://doi.org/10.1...
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https://kau.diva-por... (primary) (Raw object)
https://urn.kb.se/re...
https://doi.org/10.1...
https://urn.kb.se/re...
https://urn.kb.se/re...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • 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. 

Ämnesord

NATURVETENSKAP  -- Kemi -- Fysikalisk kemi (hsv//swe)
NATURAL SCIENCES  -- Chemical Sciences -- Physical Chemistry (hsv//eng)

Nyckelord

Chemical Engineering
Kemiteknik

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