PMID- 27516185
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20180601
LR  - 20180601
IS  - 1520-5827 (Electronic)
IS  - 0743-7463 (Linking)
VI  - 32
IP  - 35
DP  - 2016 Sep 6
TI  - The Search for Nanobubbles by Using Specular and Off-Specular Neutron 
      Reflectometry.
PG  - 9091-6
LID - 10.1021/acs.langmuir.6b02087 [doi]
AB  - 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.
FAU - Gutfreund, Philipp
AU  - Gutfreund P
AD  - Institut Laue-Langevin , 38000 Grenoble, France.
FAU - Maccarini, Marco
AU  - Maccarini M
AD  - Institut Laue-Langevin , 38000 Grenoble, France.
AD  - TIMC-IMAG, Universite Joseph Fourier , 38706 Grenoble, France.
FAU - Dennison, Andrew J C
AU  - Dennison AJ
AD  - Institut Laue-Langevin , 38000 Grenoble, France.
AD  - Department of Chemistry, Technical University Berlin , 10623 Berlin, Germany.
AD  - Department of Physics and Astronomy, University of Sheffield , S102TN Sheffield, 
      United Kingdom.
FAU - Wolff, Max
AU  - Wolff M
AD  - Materials Physics, Department of Physics and Astronomy, Uppsala University , 
      75121 Uppsala, Sweden.
LA  - eng
PT  - Journal Article
DEP - 20160824
PL  - United States
TA  - Langmuir
JT  - Langmuir : the ACS journal of surfaces and colloids
JID - 9882736
EDAT- 2016/08/16 06:00
MHDA- 2016/08/16 06:01
CRDT- 2016/08/13 06:00
PHST- 2016/08/13 06:00 [entrez]
PHST- 2016/08/16 06:00 [pubmed]
PHST- 2016/08/16 06:01 [medline]
AID - 10.1021/acs.langmuir.6b02087 [doi]
PST - ppublish
SO  - Langmuir. 2016 Sep 6;32(35):9091-6. doi: 10.1021/acs.langmuir.6b02087. Epub 2016 
      Aug 24.