TY  - JOUR
AU  - Nygard, K.
AU  - Kjellander, R.
AU  - Sarman, S.
AU  - Chodankar, S.
AU  - Perret, E.
AU  - Buitenhuis, J.
AU  - van der Veen, J.F.
TI  - Anisotropic Pair Correlations and Structure Factors of Confined Hard-Sphere Fluids: An Experimental and Theoretical Study
JO  - Physical review letters
VL  - 108
SN  - 0031-9007
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-19750
SP  - 037802
PY  - 2012
N1  - The experiment was carried out at the cSAXS beam line of the Swiss Light Source, Paul Scherrer Institut, Villigen, Switzerland. We thank the beam line staff for assistance. One of us (R. K.) gratefully acknowledges support from the Swedish Research council. The calculations in this work were supported by the Swedish National Infrastructure for Computing (SNIC 001-09-152) via PDC.
AB  - We address the fundamental question: how are pair correlations and structure factors of hard-sphere fluids affected by confinement between hard planar walls at close distance? For this purpose, we combine x-ray scattering from colloid-filled nanofluidic channel arrays and first-principles inhomogeneous liquid-state theory within the anisotropic Percus-Yevick approximation. The experimental and theoretical data are in remarkable agreement at the pair-correlation level, providing the first quantitative experimental verification of the theoretically predicted confinement-induced anisotropy of the pair-correlation functions for the fluid. The description of confined fluids at this level provides, in the general case, important insights into the mechanisms of particle-particle interactions in dense fluids under confinement.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000299328500025
DO  - DOI:10.1103/PhysRevLett.108.037802
UR  - https://juser.fz-juelich.de/record/19750
ER  -