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@ARTICLE{Lipfert:186442,
author = {Lipfert, Frederik and Holderer, Olaf and Frielinghaus,
Henrich and Appavou, Marie-Sousai and Do, Changwoo and Ohl,
Michael and Richter, Dieter},
title = {{L}ong wavelength undulations dominate dynamics in large
surfactant membrane patches},
journal = {Nanoscale},
volume = {7},
number = {6},
issn = {2040-3372},
address = {Cambridge},
publisher = {RSC Publ.},
reportid = {FZJ-2015-00517},
pages = {2578-2586},
year = {2015},
abstract = {By exposing microemulsions to small (80 nm diameter) and
large (500 nm) disk shaped clay particles we were able to
show the presence of long wavelength undulations that only
occur for large membrane patches. A combination of small
angle neutron scattering (SANS) and neutron spin echo (NSE)
experiments have been applied to study microemulsions.
These, consisting of D2O, d-decane and the surfactant C10E4,
were used in connection with Laponite (small) and Nanofil
(large) clay. To our knowledge our experiments show for the
first time that the clay platelets induce lamellar ordering
adjacent to the clay discs in the otherwise bicontinuous
microemulsion. This is due to the fact that in purely
structural investigations, radial averaging smears out the
signature of the lamellar phase. For thermodynamically
fluctuating membranes near interfaces the theory of Seifert
predicts a cross-over of the dispersion relationship from k2
to a k3-dependence. With the correlation length of the
membrane patches being confined by the dimension of the clay
platelets we were able to show that this in fact takes place
but is only present for the larger Nanofil particles.},
cin = {JCNS (München) ; Jülich Centre for Neutron Science JCNS
(München) ; JCNS-FRM-II / Neutronenstreuung ; JCNS-1 /
JCNS-SNS / ICS-1},
ddc = {600},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-1-20110106 / I:(DE-Juel1)JCNS-SNS-20110128
/ I:(DE-Juel1)ICS-1-20110106},
pnm = {6215 - Soft Matter, Health and Life Sciences (POF3-621) /
6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-6215 / G:(DE-HGF)POF3-6G15 /
G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)J-NSE-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000349472300050},
doi = {10.1039/C4NR06278G},
url = {https://juser.fz-juelich.de/record/186442},
}