Huber, PatrickPatrickHuberWallacher, DirkDirkWallacherHofmann, TommyTommyHofmannKnorr, KlausKlausKnorr2022-07-152022-07-152003-01-15Journal of Physics Condensed Matter 15 (1): S309-S314 (2003-01-15)http://hdl.handle.net/11420/13160We present an x-ray diffraction study on rod-like molecules, i.e. the normal alkanes C19H40 and C9H20 condensed in nanoporous Vycor glass. Temperature-dependent diffraction patterns elucidate how the structure and phase behaviour of these molecules are affected by the random substrate disorder and the geometric confinement. For the medium-length alkane C19H40 a quenching of the lamellar ordering is observed, whereas this geometric ordering principle survives in the case of the short-length C9H20, although in a modified fashion.en1361-648X20031S309S314IOP Publ.PhysikJournal Article10.1088/0953-8984/15/1/342Journal Article