Jamming and unjamming transition of oil-in-water emulsions under continuous temperature change

Se Bin Choi, Joon Sang Lee

Research output: Contribution to journalArticle

Abstract

To analyze the jamming and unjamming transition of oil-in-water emulsions under continuous temperature change, we simulated an emulsion system whose critical volume fraction was 0.3, which was validated with experimental results under oscillatory shear stress. In addition, we calculated the elastic modulus using the phase lag between strain and stress. Through heating and cooling, the emulsion experienced unjamming and jamming. A phenomenon-which is when the elastic modulus does not reach the expected value at the isothermal system-occurred when the emulsion system was cooled. We determined that this phenomenon was caused by the frequency being faster than the relaxation of the deformed droplets. We justified the relation between the frequency and relaxation by simulating the frequency dependency of the difference between the elastic modulus when cooled and the expected value at the same temperature.

Original languageEnglish
Article number034107
JournalBiomicrofluidics
Volume9
Issue number3
DOIs
Publication statusPublished - 2015 Jan 1

Fingerprint

jamming
Jamming
Emulsions
emulsions
Elastic Modulus
Oils
oils
modulus of elasticity
Temperature
Water
Elastic moduli
water
temperature
Heating
shear stress
Shear stress
Volume fraction
time lag
Cooling
cooling

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Materials Science(all)
  • Genetics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Cite this

@article{26835c58172e4197ac5e61a1f157891e,
title = "Jamming and unjamming transition of oil-in-water emulsions under continuous temperature change",
abstract = "To analyze the jamming and unjamming transition of oil-in-water emulsions under continuous temperature change, we simulated an emulsion system whose critical volume fraction was 0.3, which was validated with experimental results under oscillatory shear stress. In addition, we calculated the elastic modulus using the phase lag between strain and stress. Through heating and cooling, the emulsion experienced unjamming and jamming. A phenomenon-which is when the elastic modulus does not reach the expected value at the isothermal system-occurred when the emulsion system was cooled. We determined that this phenomenon was caused by the frequency being faster than the relaxation of the deformed droplets. We justified the relation between the frequency and relaxation by simulating the frequency dependency of the difference between the elastic modulus when cooled and the expected value at the same temperature.",
author = "Choi, {Se Bin} and Lee, {Joon Sang}",
year = "2015",
month = "1",
day = "1",
doi = "10.1063/1.4922278",
language = "English",
volume = "9",
journal = "Biomicrofluidics",
issn = "1932-1058",
publisher = "American Institute of Physics Publising LLC",
number = "3",

}

Jamming and unjamming transition of oil-in-water emulsions under continuous temperature change. / Choi, Se Bin; Lee, Joon Sang.

In: Biomicrofluidics, Vol. 9, No. 3, 034107, 01.01.2015.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Jamming and unjamming transition of oil-in-water emulsions under continuous temperature change

AU - Choi, Se Bin

AU - Lee, Joon Sang

PY - 2015/1/1

Y1 - 2015/1/1

N2 - To analyze the jamming and unjamming transition of oil-in-water emulsions under continuous temperature change, we simulated an emulsion system whose critical volume fraction was 0.3, which was validated with experimental results under oscillatory shear stress. In addition, we calculated the elastic modulus using the phase lag between strain and stress. Through heating and cooling, the emulsion experienced unjamming and jamming. A phenomenon-which is when the elastic modulus does not reach the expected value at the isothermal system-occurred when the emulsion system was cooled. We determined that this phenomenon was caused by the frequency being faster than the relaxation of the deformed droplets. We justified the relation between the frequency and relaxation by simulating the frequency dependency of the difference between the elastic modulus when cooled and the expected value at the same temperature.

AB - To analyze the jamming and unjamming transition of oil-in-water emulsions under continuous temperature change, we simulated an emulsion system whose critical volume fraction was 0.3, which was validated with experimental results under oscillatory shear stress. In addition, we calculated the elastic modulus using the phase lag between strain and stress. Through heating and cooling, the emulsion experienced unjamming and jamming. A phenomenon-which is when the elastic modulus does not reach the expected value at the isothermal system-occurred when the emulsion system was cooled. We determined that this phenomenon was caused by the frequency being faster than the relaxation of the deformed droplets. We justified the relation between the frequency and relaxation by simulating the frequency dependency of the difference between the elastic modulus when cooled and the expected value at the same temperature.

UR - http://www.scopus.com/inward/record.url?scp=84930959940&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84930959940&partnerID=8YFLogxK

U2 - 10.1063/1.4922278

DO - 10.1063/1.4922278

M3 - Article

VL - 9

JO - Biomicrofluidics

JF - Biomicrofluidics

SN - 1932-1058

IS - 3

M1 - 034107

ER -