Evidence for Chaotic Behavior during the Yielding of a Soft Particle Glass

Authors

David C. Venerus, Newark College of Engineering
Otar Machabeli, Newark College of Engineering
Daniela Bushiri, Newark College of Engineering
Seyed Mahmoud Arzideh, Newark College of Engineering

Document Type

Article

Publication Date

8-5-2022

Abstract

Materials comprised of deformable particles such as microgels and concentrated emulsions and foams display complex rheological behavior that includes a yielding transition from an elastic solid to viscous fluid. Most studies of this class of soft matter involve shear flows, and only a handful report both shear and normal stresses. We present measurements of the shear stress and two normal stress differences for a microgel subjected to constant shear rate flows. The shear stress evolves through the yield point in a manner indicative of simple yield stress fluid behavior. Prior to yielding, the normal stress differences are immeasurable; beyond the yield point, they evolve in a reproducibly chaotic manner.

Identifier

85136222672 (Scopus)

Publication Title

Physical Review Letters

External Full Text Location

https://doi.org/10.1103/PhysRevLett.129.068002

e-ISSN

10797114

ISSN

00319007

PubMed ID

36018644

Issue

6

Volume

129

Recommended Citation

Venerus, David C.; Machabeli, Otar; Bushiri, Daniela; and Arzideh, Seyed Mahmoud, "Evidence for Chaotic Behavior during the Yielding of a Soft Particle Glass" (2022). Faculty Publications. 2735.
https://digitalcommons.njit.edu/fac_pubs/2735