Extracting microscopic insight from transient dielectric measurements during large amplitude oscillatory shear.
Noah H ChoJiachun ShiRyan P MurphyJohn K RileySimon A RogersJeffrey J RichardsPublished in: Soft matter (2023)
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.
Keyphrases
- white matter
- drug delivery
- high frequency
- high resolution
- drug release
- single molecule
- cancer therapy
- cerebral ischemia
- molecular dynamics simulations
- resting state
- physical activity
- hyaluronic acid
- mental health
- molecular dynamics
- functional connectivity
- multiple sclerosis
- subarachnoid hemorrhage
- heat stress
- amino acid
- mass spectrometry
- solid state