Hemispherical curvature of the water-air interface induced by surfaceself assembly.

DOI

Films at the liquid air interface are traditionally believed to be flat, however the thermodynamics of self assembly are much larger than gravitational penalties so it is speculated that if a surface active molecule has the right curvature, it will bend and buckle the liquid air interface. Such an observaton has not been made before. Indirect evidence for this comes from Vibrational sum frequency spectroscopy, Langmuir Blodgett measurement and AFM imaging of deposited layers. The molecules in question are those found at the surface of hair and wool, and they form the outermost biological barrier.They are implicated in chain fluidity, bacteriostaticity and adhesion. Study of the interfacial self assembly is therefore crucial to understand the hotly debated role of this unique chemistry. Test measurements incorporating both specular reflectivity GISANS deployed on FIGARO were successful and indicate that the experiments are feasible. Further experiments are needed to provide systematic data revealing the length scales and mechanisms.

Identifier
DOI https://doi.org/10.5291/ILL-DATA.9-10-1487
Metadata Access https://data.ill.fr/openaire/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=10.5291/ILL-DATA.9-10-1487
Provenance
Creator Bergendal, Erik; Pilkington, Georgia; Rutland, Mark; Buschbaum, Peter Mueller; Campbell, Richard
Publisher Institut Laue-Langevin
Publication Year 2017
Rights OpenAccess; info:eu-repo/semantics/openAccess
OpenAccess true
Representation
Resource Type Dataset
Size 2 GB
Version 1
Discipline Particles, Nuclei and Fields