TY  - JOUR
AU  - Lipfert, Frederik
AU  - Frielinghaus, Henrich
AU  - Holderer, O.
AU  - Mattauch, S.
AU  - Monkenbusch, M.
AU  - Arend, N.
AU  - Richter, D.
TI  - Polymer enrichment decelerates surfactant membranes near interfaces
JO  - Physical review / E
VL  - 89
IS  - 4
SN  - 1539-3755
CY  - College Park, Md.
PB  - APS
M1  - FZJ-2014-02996
SP  - 042303
PY  - 2014
AB  - Close to a planar surface, lamellar structures are imposed upon otherwise bulk bicontinuous microemulsions. Thermally induced membrane undulations are modified by the presence of the rigid interface. While it has been shown that a pure membrane's dynamics are accelerated close to the interface, we observed nearly unchanged relaxation rates for membranes spiked with large amphiphilic diblock copolymers. An increase of the polymer concentration by a factor of 2–3 for the first and second surfactant membrane layers was observed. We interpret the reduced relaxation times as the result of an interplay between the bending rigidity and the characteristic distance of the first surfactant membrane to the rigid interface, which causes the hydrodynamic and steric interface effects described in Seifert's theory. The influence of these effects on decorated membranes yields a reduction of the frequencies and an amplification of the amplitudes of long-wavelength undulations, which are in accordance to our experimental findings
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000337350100005
DO  - DOI:10.1103/PhysRevE.89.042303
UR  - https://juser.fz-juelich.de/record/153365
ER  -