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Synchrotron X-ray Studies of Molecular Ordering in Confined Liquids

  • Hyunjung Kim (a1), O. H. Seeck (a2), D. R. Lee (a1), I. D. Kaendler (a1), D. Shu (a1), J. K. Basu (a3) and S. K. Sinha (a1)...


X-ray specular and off-specular reflectivity studies have been carried out to study the density modulations in liquids confined between two smooth silicon mirrors. The special technique as well as the advantages of using high energy and high brilliance synchrotron x-ray beams for carrying out such experiments will be discussed. Results will be presented on the ordering of octamethyl-cyclotetrasiloxane (OMCTS) as a function of the confining pressure, where we find evidence of layering as the gap is decreased from macroscopic down to a few nanometers.



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