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The Search for Nano...
The Search for Nanobubbles by Using Specular and Off-Specular Neutron Reflectometry
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- Gutfreund, Philipp (författare)
- Inst Laue Langevin, F-38000 Grenoble, France.
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- Maccarini, Marco (författare)
- Inst Laue Langevin, F-38000 Grenoble, France.;Univ Grenoble 1, TIMC IMAG, F-38706 Grenoble, France.
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- Dennison, Andrew J. C. (författare)
- Inst Laue Langevin, F-38000 Grenoble, France.;Tech Univ Berlin, Dept Chem, D-10623 Berlin, Germany.;Univ Sheffield, Dept Phys & Astron, Sheffield S10 2TN, S Yorkshire, England.
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- Wolff, Max (författare)
- Uppsala universitet,Materialfysik
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Inst Laue Langevin, F-38000 Grenoble, France Inst Laue Langevin, F-38000 Grenoble, France.;Univ Grenoble 1, TIMC IMAG, F-38706 Grenoble, France. (creator_code:org_t)
- 2016-08-24
- 2016
- Engelska.
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Ingår i: Langmuir. - : American Chemical Society (ACS). - 0743-7463 .- 1520-5827. ; 32:35, s. 9091-9096
- Relaterad länk:
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http://arxiv.org/pdf...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- We apply specular and off-specular neutron reflection at the hydrophobic silicon/water interface to check for evidence of nanoscopic air bubbles whose presence is claimed after an ad hoc procedure of solvent exchange. Nanobubbles and/or a depletion layer at the hydrophobic/water interface have long been discussed and generated a plethora of controversial scientific results. By combining neutron reflectometry (NR), off-specular reflectometry (OSS), and grazing incidence small angle neutron scattering (GISANS), we studied the interface between hydrophobized silicon and heavy water before and after saturation with nitrogen gas. Our specular reflectometry results can be interpreted by assuming a submolecular sized depletion layer and the off-specular measurements show no change with nitrogen super saturated water. This picture is consistent with the assumption that, following the solvent exchange, no additional nanobubbles are introduced at significant concentrations (if present at all). Furthermore, we discuss the results in terms of the maximum surface coverage of nanobubbles that could be present on the hydrophobic surface compatibly with the sensitivity limit of these techniques.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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