TY  - CONF
AU  - Frielinghaus, Henrich
TI  - Criticality of Quasi-Binary Complex Fluids with and without Confinement
PB  - ISIS
M1  - FZJ-2025-02946
PY  - 2025
AB  - The Ising criticality of quasi-binary fluids is investigated using SANS. For confinement, either an antagonistic salt or a surfactant is added. The charge density waves that are locally planar encapsulate the binary fluid between the wavefronts and thus make the criticality 2-dimensional. Using DLS and NSE, the dynamic criticality besides the structural criticality in terms of the forward scattering and the correlation length are observed. A master curve of the diffusion constant as a function of length scales was obtained. When looking at the high-Q end of the SANS data, the critical correlation function exponent eta was obtained that can also be compared via a scaling relation to the structural criticality. The 2-dimensionally confined system lets us assume a directional exponent eta. Finally, in latest SANS measurements on ZOOM with a magnetic field, the domains were aligned and a directional exponent eta was obtained. The scaling relation rationalizes the exponent eta for the 2-dimensional confinement.
T2  - UK Small Angle Scattering User Meeting 2025
CY  - 16 Jun 2025 - 18 Jun 2025, Didcot (UK)
Y2  - 16 Jun 2025 - 18 Jun 2025
M2  - Didcot, UK
LB  - PUB:(DE-HGF)6
UR  - https://juser.fz-juelich.de/record/1043638
ER  -