Henschel, AnkeAnkeHenschelKnorr, KlausKlausKnorrHuber, PatrickPatrickHuber2022-06-072022-06-072010-05-12Philosophical Magazine Letters 90 (7): 481-491 (2010-05-12)http://hdl.handle.net/11420/12840X-ray diffraction patterns of ethanol confined in parallel-aligned channels of approx. 10 nm diameter and 50 micrometer length in mesoporous silicon have been recorded as a function of filling fraction, temperature and for varying cooling and heating rates. A sorption isotherm, recorded in the liquid state, indicates a three monolayer thick, strongly adsorbed wall layer and a capillary condensed fraction of molecules in the pore center. Though the strongly adsorbed film remains in an amorphous state for the entire temperature range investigated, the capillary condensed molecules reproduce the polymorphism of bulk solid ethanol, that is the formation of either crystalline or glass-like states as a function of cooling rate. The critical rate necessary to achieve a vitrification in the mesopores is, however, at least two orders of magnitude smaller than in the bulk state. This finding can be traced both to pure geometrical constraints and quenched disorder effects, characteristic of confinement in mesoporous silicon.en1362-303620107481491Taylor & FrancisGlass transitionNanoscaleX-ray diffractionPhysics - Soft Condensed MatterPhysics - Soft Condensed MatterPhysics - Disordered Systems and Neural NetworksPhysics - Mesoscopic Systems and Quantum Hall EffectPhysics - Materials SciencePhysics - Chemical PhysicsPhysikJournal Article10.1080/095008310037669991005.2168v1Other