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PUBLICATIONS

Extracting Microscopic Insight from Transient Dielectric Measurements during Large Amplitude Oscillatory Shear

Published

Author(s)

Noah Cho, Jiachun Shi, Ryan Murphy, John Riley, Simon Rogers, Jeffrey Richards

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.
Citation
Soft Matter
Volume
19
Issue
48
Pub Type
Journals

Download Paper

https://doi.org/10.1039/D3SM00786C
Local Download

Keywords

Complex fluids, Worm-like micelles, Neutron Scattering, Rheo-SANS, Dielectric rheometry, LAOS
Materials

Citation

Cho, N. , Shi, J. , Murphy, R. , Riley, J. , Rogers, S. and Richards, J. (2023), Extracting Microscopic Insight from Transient Dielectric Measurements during Large Amplitude Oscillatory Shear, Soft Matter, [online], https://doi.org/10.1039/D3SM00786C, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=936590 (Accessed October 14, 2025)

Issues

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Created December 28, 2023, Updated November 1, 2024
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