Open AccessInnovative pressure environment combining hydrostatic pressure gradient and mechanical compression for structural investigations of nanoporous soft films
Author(s) -
Wolanin Julie,
Giraud Jérôme,
Morfin Isabelle,
Rollet Anne-Laure,
Michot Laurent,
Plazanet Marie
Publication year - 2022
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s1600577522005914
Subject(s) - materials science , compression (physics) , hydrostatic pressure , deformation (meteorology) , hydrostatic equilibrium , nanoporous , flow (mathematics) , synchrotron , anisotropy , pressure gradient , composite material , conformable matrix , stress (linguistics) , mechanics , mechanical engineering , optics , nanotechnology , physics , engineering , linguistics , philosophy , quantum mechanics
The development of a new sample environment enabling X‐ray scattering measurements at small and large angles under mechanical compression and hydraulic flow is presented. The cell, which is adapted for moderate pressures, includes beryllium windows, and allows applying simultaneously a compressive pressure up to 2.5 kbar in the perpendicular direction to the flow and either a hydrostatic pressure up to 300 bar or a pressure gradient of the same amplitude. The development of high‐pressure devices for synchrotron experiments is relevant for many scientific fields in order to unveil details of a material's structure under relevant conditions of stresses. In particular, mechanical constraints coupled to hydrostatic pressure or flow, leading to complex stress tensor and mechanical response, and therefore unexpected deformations (swelling and pore deformation), are poorly addressed. Here, first the design of the environment is described, and then its performance with measurements carried out on a regenerated cellulose membrane is demonstrated.