Séminaire/Seminar – Opportunities for soft matter science at surfaces and interfaces on the beamline SIRIUS (synchrotron SOLEIL) – Arnaud Hermmele – 22/03/23

10 h 00 min-11 h 30 min
INSP - Sorbonne Université
Sorbonne Université Campus Pierre et Marie Curie 4 place Jussieu, Paris, 75005
Type d’évènement/Event category

Barre 22-12, 4e étage, salle 426

Arnaud Hemmele – Synchrotron SOLEIL


The macroscopic behavior of soft matter systems, such as lipid membranes, liquid crystals, colloids, and polymers, is deeply related to their internal (self-)organization at the nanoscale. In general, the properties of surfaces and interfaces can be radically different than those of the bulk, which is particularly important for soft matter systems that often exhibit a large specific surface area.

The SIRIUS beamline of the SOLEIL synchrotron is dedicated to the study of surfaces and interfaces by X-ray scattering and spectroscopy in the range of tender to hard X-rays (1.1 – 13 keV). Various grazing incidence techniques are available on the beamline, such as diffraction and wide angle scattering (GIXD/GIWAXS), small angle scattering (GISAXS), fluorescence in total reflection (TRXF), as well as specular (XRR)  and off-specular (GIXOS) reflectometry.

I will discuss how these complementary techniques are applied to the characterization of a wide range of areas within soft matter science, such as polymers for organic electronics, thin lipid films, and electrolytes at charged interfaces. In particular, I will emphasize recent developments on the beamline to meet the current challenges of in situ and even in operando measurements.