Far-from-equilibrium sheared colloidal liquids: Disentangling relaxation, advection, and shear-induced diffusion

Neil Y. C. Lin; Sushmit Goyal; Xiang Cheng; Roseanna N. Zia; Fernando A. Escobedo; Itai Cohen

doi:10.1103/PhysRevE.88.062309

Far-from-equilibrium sheared colloidal liquids: Disentangling relaxation, advection, and shear-induced diffusion

Neil Y. C. Lin, Sushmit Goyal, Xiang Cheng, Roseanna N. Zia, Fernando A. Escobedo, Itai Cohen

Research output: Contribution to journal › Article › peer-review

19 Scopus citations

Abstract

Using high-speed confocal microscopy, we measure the particle positions in a colloidal suspension under large-amplitude oscillatory shear. Using the particle positions, we quantify the in situ anisotropy of the pair-correlation function, a measure of the Brownian stress. From these data we find two distinct types of responses as the system crosses over from equilibrium to far-from-equilibrium states. The first is a nonlinear amplitude saturation that arises from shear-induced advection, while the second is a linear frequency saturation due to competition between suspension relaxation and shear rate. In spite of their different underlying mechanisms, we show that all the data can be scaled onto a master curve that spans the equilibrium and far-from-equilibrium regimes, linking small-amplitude oscillatory to continuous shear. This observation illustrates a colloidal analog of the Cox-Merz rule and its microscopic underpinning. Brownian dynamics simulations show that interparticle interactions are sufficient for generating both experimentally observed saturations. © 2013 American Physical Society.

Original language	English (US)
Journal	Physical Review E
Volume	88
Issue number	6
DOIs	https://doi.org/10.1103/PhysRevE.88.062309
State	Published - Dec 18 2013
Externally published	Yes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-C1-018-02
Acknowledgements: We thank D. Koch, L. Archer, I. Procaccia, G. Henchel, E. Bochbinder, B. Leahy, and J. L. Silverberg for helpful conversations. This work was supported in part by Award No. KUS-C1-018-02 from King Abdullah University of Science and Technology; the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. ER46517 (X.C.); and the National Science Foundation CBET-PMP Award No. 1232666. F.A.E. is grateful for computer cycles supplied by the Extreme Science and Engineering Discovery Environment, which is supported by National Science Foundation Grant No. OCI-1053575.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

Access to Document

10.1103/PhysRevE.88.062309

Cite this

@article{0273f71fbcdf481e96e69df262b06611,

title = "Far-from-equilibrium sheared colloidal liquids: Disentangling relaxation, advection, and shear-induced diffusion",

abstract = "Using high-speed confocal microscopy, we measure the particle positions in a colloidal suspension under large-amplitude oscillatory shear. Using the particle positions, we quantify the in situ anisotropy of the pair-correlation function, a measure of the Brownian stress. From these data we find two distinct types of responses as the system crosses over from equilibrium to far-from-equilibrium states. The first is a nonlinear amplitude saturation that arises from shear-induced advection, while the second is a linear frequency saturation due to competition between suspension relaxation and shear rate. In spite of their different underlying mechanisms, we show that all the data can be scaled onto a master curve that spans the equilibrium and far-from-equilibrium regimes, linking small-amplitude oscillatory to continuous shear. This observation illustrates a colloidal analog of the Cox-Merz rule and its microscopic underpinning. Brownian dynamics simulations show that interparticle interactions are sufficient for generating both experimentally observed saturations. {\textcopyright} 2013 American Physical Society.",

author = "Lin, {Neil Y. C.} and Sushmit Goyal and Xiang Cheng and Zia, {Roseanna N.} and Escobedo, {Fernando A.} and Itai Cohen",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-C1-018-02 Acknowledgements: We thank D. Koch, L. Archer, I. Procaccia, G. Henchel, E. Bochbinder, B. Leahy, and J. L. Silverberg for helpful conversations. This work was supported in part by Award No. KUS-C1-018-02 from King Abdullah University of Science and Technology; the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. ER46517 (X.C.); and the National Science Foundation CBET-PMP Award No. 1232666. F.A.E. is grateful for computer cycles supplied by the Extreme Science and Engineering Discovery Environment, which is supported by National Science Foundation Grant No. OCI-1053575. This publication acknowledges KAUST support, but has no KAUST affiliated authors.",

year = "2013",

month = dec,

day = "18",

doi = "10.1103/PhysRevE.88.062309",

language = "English (US)",

volume = "88",

journal = "Physical Review E",

issn = "1539-3755",

publisher = "American Physical Society",

number = "6",

}

TY - JOUR

T1 - Far-from-equilibrium sheared colloidal liquids: Disentangling relaxation, advection, and shear-induced diffusion

AU - Lin, Neil Y. C.

AU - Goyal, Sushmit

AU - Cheng, Xiang

AU - Zia, Roseanna N.

AU - Escobedo, Fernando A.

AU - Cohen, Itai

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledged KAUST grant number(s): KUS-C1-018-02 Acknowledgements: We thank D. Koch, L. Archer, I. Procaccia, G. Henchel, E. Bochbinder, B. Leahy, and J. L. Silverberg for helpful conversations. This work was supported in part by Award No. KUS-C1-018-02 from King Abdullah University of Science and Technology; the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. ER46517 (X.C.); and the National Science Foundation CBET-PMP Award No. 1232666. F.A.E. is grateful for computer cycles supplied by the Extreme Science and Engineering Discovery Environment, which is supported by National Science Foundation Grant No. OCI-1053575. This publication acknowledges KAUST support, but has no KAUST affiliated authors.

PY - 2013/12/18

Y1 - 2013/12/18

N2 - Using high-speed confocal microscopy, we measure the particle positions in a colloidal suspension under large-amplitude oscillatory shear. Using the particle positions, we quantify the in situ anisotropy of the pair-correlation function, a measure of the Brownian stress. From these data we find two distinct types of responses as the system crosses over from equilibrium to far-from-equilibrium states. The first is a nonlinear amplitude saturation that arises from shear-induced advection, while the second is a linear frequency saturation due to competition between suspension relaxation and shear rate. In spite of their different underlying mechanisms, we show that all the data can be scaled onto a master curve that spans the equilibrium and far-from-equilibrium regimes, linking small-amplitude oscillatory to continuous shear. This observation illustrates a colloidal analog of the Cox-Merz rule and its microscopic underpinning. Brownian dynamics simulations show that interparticle interactions are sufficient for generating both experimentally observed saturations. © 2013 American Physical Society.

AB - Using high-speed confocal microscopy, we measure the particle positions in a colloidal suspension under large-amplitude oscillatory shear. Using the particle positions, we quantify the in situ anisotropy of the pair-correlation function, a measure of the Brownian stress. From these data we find two distinct types of responses as the system crosses over from equilibrium to far-from-equilibrium states. The first is a nonlinear amplitude saturation that arises from shear-induced advection, while the second is a linear frequency saturation due to competition between suspension relaxation and shear rate. In spite of their different underlying mechanisms, we show that all the data can be scaled onto a master curve that spans the equilibrium and far-from-equilibrium regimes, linking small-amplitude oscillatory to continuous shear. This observation illustrates a colloidal analog of the Cox-Merz rule and its microscopic underpinning. Brownian dynamics simulations show that interparticle interactions are sufficient for generating both experimentally observed saturations. © 2013 American Physical Society.

UR - http://hdl.handle.net/10754/598311

UR - https://link.aps.org/doi/10.1103/PhysRevE.88.062309

UR - http://www.scopus.com/inward/record.url?scp=84891790974&partnerID=8YFLogxK

U2 - 10.1103/PhysRevE.88.062309

DO - 10.1103/PhysRevE.88.062309

M3 - Article

C2 - 24483446

SN - 1539-3755

VL - 88

JO - Physical Review E

JF - Physical Review E

IS - 6

ER -

Far-from-equilibrium sheared colloidal liquids: Disentangling relaxation, advection, and shear-induced diffusion

Abstract

Bibliographical note

Access to Document

Other files and links

Fingerprint

Cite this