Issue 48, 2023

Extracting microscopic insight from transient dielectric measurements during large amplitude oscillatory shear

Abstract

Probing the transient microstructure of soft matter far from equilibrium is an ongoing challenge to understanding material processing. In this work, we investigate inverse worm-like micelles undergoing large amplitude oscillatory shear using time-resolved dielectric spectroscopy. By controlling the Weissenburg number, we compare the non-linear microstructure response of branched and unbranched worm-like micelles and isolate distinct elastic effects that manifest near flow reversal. We validate our dielectric measurements with small angle neutron scattering and employ sequence of physical processes to disentangle the elastic and viscous contributions of the stress.

Graphical abstract: Extracting microscopic insight from transient dielectric measurements during large amplitude oscillatory shear

Supplementary files

Article information

Article type
Paper
Submitted
16 Mezh. 2023
Accepted
29 Eost 2023
First published
29 Eost 2023

Soft Matter, 2023,19, 9379-9388

Author version available

Extracting microscopic insight from transient dielectric measurements during large amplitude oscillatory shear

N. H. Cho, J. Shi, R. P. Murphy, J. K. Riley, S. A. Rogers and J. J. Richards, Soft Matter, 2023, 19, 9379 DOI: 10.1039/D3SM00786C

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