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A new liquid surface neutron reflectometer and its application to the study of DPPC in a monolayer at the air/water interface
Author(s) -
Vaknin D.,
Kjaer K.,
AlsNielsen J.,
Lösche M.
Publication year - 1991
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19910460155
Subject(s) - monolayer , neutron , neutron reflectometry , materials science , optics , wilhelmy plate , analytical chemistry (journal) , chemistry , neutron scattering , physics , chromatography , nuclear physics , small angle neutron scattering , nanotechnology , composite material , contact angle
A constant wavelength neutron reflectometer is described. Using this reflectometer, the neutron reflectivities from phosphatidylcholine monolayers in the highly condensed LC phase on ultra pure H 2 O and D 2 O have been measured on a Wilhelmy film balance. The neutron reflectivities have been carefully compared with those obtained by the X‐ray method applied to the same monolayer under similar conditions. A new approach to analyzing a combined set of data composed of X‐ray and neutron reflectivities has been used. From the analysis it is concluded that despite their limited q z range neutron reflectivities are as essential as X‐ray reflectivities for the unique determination of the monolayer structure.