Model-independent recovery of interfacial structure from multi-contrast neutron reflectivity data.

ABSTRACT: Neutron specular reflectivity at soft interfaces provides sub-nanometre information concerning the molecular distribution of thin films, while the application of contrast variation can highlight the scattering from different parts of the system and lead to an overall reduction in fitting ambiguity. Traditional modelling approaches involve the construction of a trial scattering length density profile based on initial speculation and the subsequent refinement of its parameters through minimization of the discrepancy between the calculated and measured reflectivity. In practice this might produce an artificial bias towards specific sets of solutions. On the other hand, direct inversion of reflectivity data, despite its ability to provide a unique solution, is subject to limitations and experi

SUBMITTER: Koutsioubas A 

PROVIDER: S-EPMC6557181 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature