Flow-Switched Bistability in a Colloidal Gel with Non-Brownian Grains

Yujie Jiang; Soichiro Makino; John R. Royer; Wilson C. K. Poon

doi:10.1103/PhysRevLett.128.248002

Flow-Switched Bistability in a Colloidal Gel with Non-Brownian Grains

Yujie Jiang^*, Soichiro Makino, John R. Royer, Wilson C. K. Poon

^*Corresponding author for this work

School of Physics and Astronomy

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

Abstract

We show that mixing a colloidal gel with larger, non-Brownian grains generates novel flow-switched bistability. Using a combination of confocal microscopy and rheology, we find that prolonged moderate shear results in liquefaction by collapsing the gel into disjoint globules, whereas fast shear gives rise to a yield-stress gel with granular inclusions upon flow cessation. We map out the state diagram of this new `mechanorheological material' with varying granular content and demonstrate that its behavior is also found in separate mixture using different particles and solvents.

Original language	English
Article number	248002
Pages (from-to)	1-5
Number of pages	5
Journal	Physical Review Letters
Volume	128
Issue number	24
Early online date	16 Jun 2022
DOIs	https://doi.org/10.1103/PhysRevLett.128.248002
Publication status	Published - 17 Jun 2022

Keywords / Materials (for Non-textual outputs)

cond-mat.soft

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10.1103/PhysRevLett.128.248002

Main_textAccepted author manuscript, 16.1 MB
2111.06019v2

EPSRC ICase PHD ct-4854
Poon, W. (Principal Investigator)
UK industry, commerce and public corporations
1/10/17 → 30/09/21
Project: Research
Predictive formulation of high-solid-content complex dispersions
Poon, W. (Principal Investigator)
EPSRC
1/09/16 → 24/07/20
Project: Research

Cite this

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title = "Flow-Switched Bistability in a Colloidal Gel with Non-Brownian Grains",

abstract = " We show that mixing a colloidal gel with larger, non-Brownian grains generates novel flow-switched bistability. Using a combination of confocal microscopy and rheology, we find that prolonged moderate shear results in liquefaction by collapsing the gel into disjoint globules, whereas fast shear gives rise to a yield-stress gel with granular inclusions upon flow cessation. We map out the state diagram of this new `mechanorheological material' with varying granular content and demonstrate that its behavior is also found in separate mixture using different particles and solvents. ",

keywords = "cond-mat.soft",

author = "Yujie Jiang and Soichiro Makino and Royer, {John R.} and Poon, {Wilson C. K.}",

note = "Funding Information: We thank Andy Schofield for particle synthesis and Tom Glen for cryogenic SEM assistance. J. R. R. and W. C. K. P. were funded by the Engineering and Physical Sciences Research Council (EPSRC, EP/N025318/1). Y. J. was funded by the EPSRC Centre for Doctoral Training in Soft Matter and Functional Interfaces (SOFI CDT, EP/L015536/1) and Schlumberger Research Cambridge. Publisher Copyright: {\textcopyright} 2022 American Physical Society.",

year = "2022",

month = jun,

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doi = "10.1103/PhysRevLett.128.248002",

language = "English",

volume = "128",

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TY - JOUR

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AU - Jiang, Yujie

AU - Makino, Soichiro

AU - Royer, John R.

AU - Poon, Wilson C. K.

N1 - Funding Information: We thank Andy Schofield for particle synthesis and Tom Glen for cryogenic SEM assistance. J. R. R. and W. C. K. P. were funded by the Engineering and Physical Sciences Research Council (EPSRC, EP/N025318/1). Y. J. was funded by the EPSRC Centre for Doctoral Training in Soft Matter and Functional Interfaces (SOFI CDT, EP/L015536/1) and Schlumberger Research Cambridge. Publisher Copyright: © 2022 American Physical Society.

PY - 2022/6/17

Y1 - 2022/6/17

N2 - We show that mixing a colloidal gel with larger, non-Brownian grains generates novel flow-switched bistability. Using a combination of confocal microscopy and rheology, we find that prolonged moderate shear results in liquefaction by collapsing the gel into disjoint globules, whereas fast shear gives rise to a yield-stress gel with granular inclusions upon flow cessation. We map out the state diagram of this new `mechanorheological material' with varying granular content and demonstrate that its behavior is also found in separate mixture using different particles and solvents.

AB - We show that mixing a colloidal gel with larger, non-Brownian grains generates novel flow-switched bistability. Using a combination of confocal microscopy and rheology, we find that prolonged moderate shear results in liquefaction by collapsing the gel into disjoint globules, whereas fast shear gives rise to a yield-stress gel with granular inclusions upon flow cessation. We map out the state diagram of this new `mechanorheological material' with varying granular content and demonstrate that its behavior is also found in separate mixture using different particles and solvents.

KW - cond-mat.soft

U2 - 10.1103/PhysRevLett.128.248002

DO - 10.1103/PhysRevLett.128.248002

M3 - Article

SN - 0031-9007

VL - 128

SP - 1

EP - 5

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

M1 - 248002

ER -

Flow-Switched Bistability in a Colloidal Gel with Non-Brownian Grains

Abstract

Keywords / Materials (for Non-textual outputs)

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Projects

EPSRC ICase PHD ct-4854

Predictive formulation of high-solid-content complex dispersions

Cite this