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Quantized Layer Growth at Liquid-Crystal Surfaces

Ocko, B. M.; Braslau, A.; Pershan, Peter S.; Als-Nielsen, J.; Deutsch, M. (American Physical Society, 1986)

We report x-ray reflectivity measurements on the free surface of dodecylcyanobiphenyl (12CB) at the isotropic to smectic-A phase transition. At about \(10^{\circ}C\) above \(T_{IA}\), smectic-A-like ordering develops at ...

Surface Roughness of Water Measured by X-Ray Reflectivity

Braslau, A.; Deutsch, M.; Pershan, Peter S.; Weiss, A. H.; Als-Nielsen, J.; Bohr, J. (American Physical Society, 1985)

The roughness of the liquid-vapor interface for pure water was measured by a technique of x-ray reflectivity. With synchrotron radiation \((\lambda \sim1.5 \mathring{A})\), the angular dependence of the x-ray reflectivity ...

X-Ray Reflectivity Studies of a Microemulsion Surface

Schwartz, D. K.; Braslau, A.; Ocko, B.; Pershan, Peter S.; Als-Nielsen, J.; Huang, J. S. (American Physical Society, 1988)

The surface structure of the AOT (sodium di-2-ethylsulfosuccinate) microemulsion system with equal volume fractions of D2O and decane, for AOT volume fractions of 0.42, 0.305, and 0.181, has been studied by a combination ...

Capillary Waves on the Surface of Simple Liquids Measured by X-Ray Reflectivity

Braslau, A.; Pershan, Peter S.; Swislow, G.; Ocko, B. M.; Als-Nielsen, J. (American Physical Society, 1988)

The properties of the liquid-vapor interface for three simple liquids (water, carbon tetrachloride, and methanol) have been measured using x-ray reflectivity. The measured surface roughness is interpreted using a model ...

Smectic Layering at the Free Surface of Liquid Crystals in the Nematic Phase: X-Ray Reflectivity

Pershan, Peter S.; Braslau, A.; Weiss, A. H.; Als-Nielsen, J. (American Physical Society, 1987)

Smectic layering at the surface and smectic fluctuations in the bulk can be studied simultaneously by x-ray specular reflectivity and scattering measurements. There is a peak in the angular dependence of the specular ...