β Scribed by T. Pfohl; D. Beaglehole; H. Riegler
No coin nor oath required. For personal study only.
The surface freezing of alkane/air interfaces was investigated by ellipsometry and surface tension measurements. It is observed as a small jump in the ellipsometric signal. This shift can be explained by the transition from an isotropic liquid surface to a well-ordered monolayer only through a fortituous cancellation of layering and anisotropy effects. Therefore, an alternative model is discussed which interprets the surface freezing as a transition from a nematic-like molecular ordering at the interface above the surface melting temperature to a smectic-like ordering below.
π SIMILAR VOLUMES
The adsorption of anionic and nonionic polydisperse surfactants vity experiments were performed either with neutron or light was studied by ellipsometry on titania and silica, respectively. The (12, 13). Among these methods, ellipsometry has drawn effect of polydispersity is mainly observable in the
Infrared-visible sum-frequency generation (SFG) has been used to obtain the surface vibrational spectra of CH stretches for liquid n-eicosane and a monolayer film of 1-dodecanoi in equilibrium with an excess drop on water. The SFG data for surface freezing of eicosane represent a unique study of ord