Effect of particle shape on drying dynamics in suspension drops using multi-speckle diffusing wave spectroscopy

Baek Sung Park, Kevin Injoe Jung, Seong Jae Lee, Kwan Young Lee, Hyun Wook Jung

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The relationship between particle dynamics in a suspension drop during drying and final coffee ring patterns was investigated using suspension systems with spherical and non-spherical ellipsoidal particles. Employing multi-speckle diffusing wave spectroscopy (MSDWS), fast particle Brownian motions in suspension drops containing spherical and ellipsoidal particles were quantitatively compared during the drying process in real time. From the autocorrelation function data and characteristic times for β-relaxation, we confirmed that ellipsoidal particles move more slowly than spherical particles in a suspension drop due to their structural factor. The resulting coffee ring patterns by spherical and ellipsoidal particles are clearly distinguishable from one another and are dependent upon particulate concentration, initial drop volume, and particle shape. Notably, ellipsoidal particles in a suspension drop form coffee rings less readily than spherical particles.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalColloid and Polymer Science
DOIs
Publication statusAccepted/In press - 2018 Mar 29

Fingerprint

Speckle
drying
Suspensions
Drying
Coffee
Spectroscopy
spectroscopy
coffee
Brownian movement
Autocorrelation
rings
particulates
autocorrelation

Keywords

  • Autocorrelation function
  • Characteristic time
  • Coffee ring effect
  • Multi-speckle diffusing wave spectroscopy
  • Spherical and ellipsoidal particles
  • Suspension drying
  • β-relaxation

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Colloid and Surface Chemistry
  • Materials Chemistry

Cite this

Effect of particle shape on drying dynamics in suspension drops using multi-speckle diffusing wave spectroscopy. / Park, Baek Sung; Jung, Kevin Injoe; Lee, Seong Jae; Lee, Kwan Young; Jung, Hyun Wook.

In: Colloid and Polymer Science, 29.03.2018, p. 1-9.

Research output: Contribution to journalArticle

@article{bfb3e879a0ca4779a79bf9d3d91cca7b,
title = "Effect of particle shape on drying dynamics in suspension drops using multi-speckle diffusing wave spectroscopy",
abstract = "The relationship between particle dynamics in a suspension drop during drying and final coffee ring patterns was investigated using suspension systems with spherical and non-spherical ellipsoidal particles. Employing multi-speckle diffusing wave spectroscopy (MSDWS), fast particle Brownian motions in suspension drops containing spherical and ellipsoidal particles were quantitatively compared during the drying process in real time. From the autocorrelation function data and characteristic times for β-relaxation, we confirmed that ellipsoidal particles move more slowly than spherical particles in a suspension drop due to their structural factor. The resulting coffee ring patterns by spherical and ellipsoidal particles are clearly distinguishable from one another and are dependent upon particulate concentration, initial drop volume, and particle shape. Notably, ellipsoidal particles in a suspension drop form coffee rings less readily than spherical particles.",
keywords = "Autocorrelation function, Characteristic time, Coffee ring effect, Multi-speckle diffusing wave spectroscopy, Spherical and ellipsoidal particles, Suspension drying, β-relaxation",
author = "Park, {Baek Sung} and Jung, {Kevin Injoe} and Lee, {Seong Jae} and Lee, {Kwan Young} and Jung, {Hyun Wook}",
year = "2018",
month = "3",
day = "29",
doi = "10.1007/s00396-018-4315-x",
language = "English",
pages = "1--9",
journal = "Colloid and Polymer Science",
issn = "0303-402X",
publisher = "Springer Verlag",

}

TY - JOUR

T1 - Effect of particle shape on drying dynamics in suspension drops using multi-speckle diffusing wave spectroscopy

AU - Park, Baek Sung

AU - Jung, Kevin Injoe

AU - Lee, Seong Jae

AU - Lee, Kwan Young

AU - Jung, Hyun Wook

PY - 2018/3/29

Y1 - 2018/3/29

N2 - The relationship between particle dynamics in a suspension drop during drying and final coffee ring patterns was investigated using suspension systems with spherical and non-spherical ellipsoidal particles. Employing multi-speckle diffusing wave spectroscopy (MSDWS), fast particle Brownian motions in suspension drops containing spherical and ellipsoidal particles were quantitatively compared during the drying process in real time. From the autocorrelation function data and characteristic times for β-relaxation, we confirmed that ellipsoidal particles move more slowly than spherical particles in a suspension drop due to their structural factor. The resulting coffee ring patterns by spherical and ellipsoidal particles are clearly distinguishable from one another and are dependent upon particulate concentration, initial drop volume, and particle shape. Notably, ellipsoidal particles in a suspension drop form coffee rings less readily than spherical particles.

AB - The relationship between particle dynamics in a suspension drop during drying and final coffee ring patterns was investigated using suspension systems with spherical and non-spherical ellipsoidal particles. Employing multi-speckle diffusing wave spectroscopy (MSDWS), fast particle Brownian motions in suspension drops containing spherical and ellipsoidal particles were quantitatively compared during the drying process in real time. From the autocorrelation function data and characteristic times for β-relaxation, we confirmed that ellipsoidal particles move more slowly than spherical particles in a suspension drop due to their structural factor. The resulting coffee ring patterns by spherical and ellipsoidal particles are clearly distinguishable from one another and are dependent upon particulate concentration, initial drop volume, and particle shape. Notably, ellipsoidal particles in a suspension drop form coffee rings less readily than spherical particles.

KW - Autocorrelation function

KW - Characteristic time

KW - Coffee ring effect

KW - Multi-speckle diffusing wave spectroscopy

KW - Spherical and ellipsoidal particles

KW - Suspension drying

KW - β-relaxation

UR - http://www.scopus.com/inward/record.url?scp=85044517303&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85044517303&partnerID=8YFLogxK

U2 - 10.1007/s00396-018-4315-x

DO - 10.1007/s00396-018-4315-x

M3 - Article

AN - SCOPUS:85044517303

SP - 1

EP - 9

JO - Colloid and Polymer Science

JF - Colloid and Polymer Science

SN - 0303-402X

ER -