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Updated: Aug 19, 2026

Combining Microfluidics and Microrheology to Determine Rheological Properties of Soft Matter during Repeated Phase Transitions
Published on: April 19, 2018
Flow-enhanced molecular reorientations and interfacial slip probed by field-cycling NMR relaxometry in microscopic
Carlos Mattea1, Rainer Kimmich
1Sektion Kernresonanzspektroskopie, Universität Ulm, 89069 Ulm, Germany.
Abstract:
It is shown that hydrodynamic flow has an effect on spin-lattice relaxation in water filled into a porous monolithic silica material. This is a rotational analogue of translational hydrodynamic (or Taylor-Aris) dispersion arising from incoherent Brownian motion in combination with coherent flow. The effect is demonstrated with the aid of field-cycling NMR relaxometry and confirmed by theoretical considerations. The results directly verify bulk mediated surface diffusion and reveal interfacial slip at fluid-solid interfaces.

