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000011624 0247_ $$2DOI$$a10.1021/jz1012406
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000011624 084__ $$2WoS$$aChemistry, Physical
000011624 084__ $$2WoS$$aNanoscience & Nanotechnology
000011624 084__ $$2WoS$$aMaterials Science, Multidisciplinary
000011624 084__ $$2WoS$$aPhysics, Atomic, Molecular & Chemical
000011624 1001_ $$0P:(DE-Juel1)130781$$aKusmin, A.$$b0$$uFZJ
000011624 245__ $$aEvidence of a Sticky Boundary Layer in Nanochannels: A Neutron Spin Echo Study of n-Hexatriacontane and Poly(ethylene oxide) Confined in Porous Silicon
000011624 260__ $$aWashington, DC$$bSoc.$$c2010
000011624 300__ $$a3116 - 3121
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000011624 440_0 $$023161$$aJournal of Physical Chemistry Letters, The$$v1$$x1948-7185$$y20
000011624 500__ $$aThis work has been supported by the German Research Foundation (DEG) within the priority program SP 1164, Nano- and Microfluidics, grant no Hu 850/2
000011624 520__ $$aNeutron 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.
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000011624 7001_ $$0P:(DE-HGF)0$$aGruener, S.$$b1
000011624 7001_ $$0P:(DE-HGF)0$$aHenschel, A.$$b2
000011624 7001_ $$0P:(DE-Juel1)130718$$aHolderer, O.$$b3$$uFZJ
000011624 7001_ $$0P:(DE-Juel1)130501$$aAllgaier, J.$$b4$$uFZJ
000011624 7001_ $$0P:(DE-Juel1)130917$$aRichter, D.$$b5$$uFZJ
000011624 7001_ $$0P:(DE-HGF)0$$aHuber, P.$$b6
000011624 773__ $$0PERI:(DE-600)2522838-9$$a10.1021/jz1012406$$gVol. 1, p. 3116 - 3121$$p3116 - 3121$$q1<3116 - 3121$$tThe @journal of physical chemistry letters$$v1$$x1948-7185$$y2010
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