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@ARTICLE{Kusmin:11624,
author = {Kusmin, A. and Gruener, S. and Henschel, A. and Holderer,
O. and Allgaier, J. and Richter, D. and Huber, P.},
title = {{E}vidence of a {S}ticky {B}oundary {L}ayer in
{N}anochannels: {A} {N}eutron {S}pin {E}cho {S}tudy of
n-{H}exatriacontane and {P}oly(ethylene oxide) {C}onfined in
{P}orous {S}ilicon},
journal = {The journal of physical chemistry letters},
volume = {1},
issn = {1948-7185},
address = {Washington, DC},
publisher = {Soc.},
reportid = {PreJuSER-11624},
pages = {3116 - 3121},
year = {2010},
note = {This work has been supported by the German Research
Foundation (DEG) within the priority program SP 1164, Nano-
and Microfluidics, grant no Hu 850/2},
abstract = {Neutron spin echo spectra of the melts of n-hexatriacontane
(C36) and poly(ethylene oxide) (PEO), 2 kg/mol, confined in
circular channels with a mean diameter of 10 and 12 nm,
respectively, in porous silicon, were recorded at Q values
between 0.05 and 0.15 angstrom(-1). The spectra were
successfully analyzed in terms of a two-state model where
wall-adsorbed molecules are immobile and free molecules have
a bulk-like dynamics. For C36, we find an adsorbed bilayer
at 364 K and a monolayer at 435 K (in both cases, the long
axis of the molecules is oriented parallel to the surface)
and no adsorbed layer at 512 K. For PEO, we find an adsorbed
monolayer at 413 K. The results support the existence of a
sticky boundary layer inferred from capillary filling
experiments.},
keywords = {J (WoSType)},
cin = {IFF-4 / IFF-5 / Jülich Centre for Neutron Science JCNS
(JCNS) ; JCNS / ICS-1},
ddc = {530},
cid = {I:(DE-Juel1)VDB784 / I:(DE-Juel1)VDB785 /
I:(DE-Juel1)JCNS-20121112 / I:(DE-Juel1)ICS-1-20110106},
pnm = {Großgeräte für die Forschung mit Photonen, Neutronen und
Ionen (PNI) / BioSoft: Makromolekulare Systeme und
biologische Informationsverarbeitung},
pid = {G:(DE-Juel1)FUEK415 / G:(DE-Juel1)FUEK505},
experiment = {EXP:(DE-MLZ)J-NSE-20140101},
shelfmark = {Chemistry, Physical / Nanoscience $\&$ Nanotechnology /
Materials Science, Multidisciplinary / Physics, Atomic,
Molecular $\&$ Chemical},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000283463500022},
doi = {10.1021/jz1012406},
url = {https://juser.fz-juelich.de/record/11624},
}