Structure of confined fluids by x-ray interferometry using diffraction gratings.
We develop a novel method for structure determination of confined fluids using diffraction-grating-based x-ray interferometry.Within this approach, diffraction from a microfluidic array, which acts both as confinement and transmission diffraction grating, provides the reference wave, whereas the density modulations of the confined fluid, acting as a weak phase object, generate the object wave. The ensemble-averaged density profile of the fluid perpendicular to the confining channel is then unambiguously obtained from the interference between the reference and object waves by direct Fourier inversion.
Nygård
K
K
Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland. kim.nygard@psi.ch
Satapathy
D K
DK
Bunk
O
O
Diaz
A
A
Perret
E
E
Buitenhuis
J
J
Pfeiffer
F
F
David
C
C
van der Veen
F
F
D045424:Complex Mixtures / Q000737:chemistry*; D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D008027:Light; D044085:Microfluidics / Q000295:instrumentation*; D008962:Models, Theoretical; D012031:Refractometry / Q000295:instrumentation*; D012542:Scattering, Radiation; D014961:X-Ray Diffraction / Q000295:instrumentation*
D045424:Complex Mixtures