Mesoscopic heterogeneity in soft materials by local rheological measurements

Research output: Contribution to journalArticle

Abstract

Soft materials including polymers, micelles, gels and liquid crystals possess hierarchical structure with various length scales ranging from nanometer to micrometer. Thus, to give a better understanding of dynamics, it is necessary to examine the structure and physical properties at various length scales, and clarify the correlation between them. Recently, measurements of local rheological properties in soft materials have become possible with the advent of various techniques, called microrheology. In these techniques, rheological information can be accessed on the basis of the movement of probe particles dispersed in a sample to be measured. We have made an effort for time- and spatialresolved rheological measurements for soft materials, by using optical tweezers and particle tracking that fall under active and passive methods in microrheology, respectively. Such studies can provide information on a concentration fluctuation and a spatial heterogeneity in the systems. Notably, a worm-like micelle solution, a supramolecular hydrogel and lyotropic liquid crystals were spatially heterogeneous on the comparable or at a smaller length scale less than the characteristic length of network and interfacial structures, and on the time scale shorter than the relaxation time.

Original languageEnglish
Pages (from-to)245-252
Number of pages8
JournalNihon Reoroji Gakkaishi
Volume44
Issue number5
Publication statusPublished - Jan 1 2016

Fingerprint

Liquid Crystals
Micelles
Liquid crystals
Optical tweezers
micelles
Hydrogel
liquid crystals
crystals
Hydrogels
Relaxation time
worms
Polymers
Gels
Physical properties
micrometers
physical properties
relaxation time
gels
probes
polymers

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Mesoscopic heterogeneity in soft materials by local rheological measurements. / Shundo, Atsuomi.

In: Nihon Reoroji Gakkaishi, Vol. 44, No. 5, 01.01.2016, p. 245-252.

Research output: Contribution to journalArticle

@article{9c1561a980a74738ab19155ddfee28c6,
title = "Mesoscopic heterogeneity in soft materials by local rheological measurements",
abstract = "Soft materials including polymers, micelles, gels and liquid crystals possess hierarchical structure with various length scales ranging from nanometer to micrometer. Thus, to give a better understanding of dynamics, it is necessary to examine the structure and physical properties at various length scales, and clarify the correlation between them. Recently, measurements of local rheological properties in soft materials have become possible with the advent of various techniques, called microrheology. In these techniques, rheological information can be accessed on the basis of the movement of probe particles dispersed in a sample to be measured. We have made an effort for time- and spatialresolved rheological measurements for soft materials, by using optical tweezers and particle tracking that fall under active and passive methods in microrheology, respectively. Such studies can provide information on a concentration fluctuation and a spatial heterogeneity in the systems. Notably, a worm-like micelle solution, a supramolecular hydrogel and lyotropic liquid crystals were spatially heterogeneous on the comparable or at a smaller length scale less than the characteristic length of network and interfacial structures, and on the time scale shorter than the relaxation time.",
author = "Atsuomi Shundo",
year = "2016",
month = "1",
day = "1",
language = "English",
volume = "44",
pages = "245--252",
journal = "Nihon Reoroji Gakkaishi",
issn = "0387-1533",
publisher = "Society of Rheology",
number = "5",

}

TY - JOUR

T1 - Mesoscopic heterogeneity in soft materials by local rheological measurements

AU - Shundo, Atsuomi

PY - 2016/1/1

Y1 - 2016/1/1

N2 - Soft materials including polymers, micelles, gels and liquid crystals possess hierarchical structure with various length scales ranging from nanometer to micrometer. Thus, to give a better understanding of dynamics, it is necessary to examine the structure and physical properties at various length scales, and clarify the correlation between them. Recently, measurements of local rheological properties in soft materials have become possible with the advent of various techniques, called microrheology. In these techniques, rheological information can be accessed on the basis of the movement of probe particles dispersed in a sample to be measured. We have made an effort for time- and spatialresolved rheological measurements for soft materials, by using optical tweezers and particle tracking that fall under active and passive methods in microrheology, respectively. Such studies can provide information on a concentration fluctuation and a spatial heterogeneity in the systems. Notably, a worm-like micelle solution, a supramolecular hydrogel and lyotropic liquid crystals were spatially heterogeneous on the comparable or at a smaller length scale less than the characteristic length of network and interfacial structures, and on the time scale shorter than the relaxation time.

AB - Soft materials including polymers, micelles, gels and liquid crystals possess hierarchical structure with various length scales ranging from nanometer to micrometer. Thus, to give a better understanding of dynamics, it is necessary to examine the structure and physical properties at various length scales, and clarify the correlation between them. Recently, measurements of local rheological properties in soft materials have become possible with the advent of various techniques, called microrheology. In these techniques, rheological information can be accessed on the basis of the movement of probe particles dispersed in a sample to be measured. We have made an effort for time- and spatialresolved rheological measurements for soft materials, by using optical tweezers and particle tracking that fall under active and passive methods in microrheology, respectively. Such studies can provide information on a concentration fluctuation and a spatial heterogeneity in the systems. Notably, a worm-like micelle solution, a supramolecular hydrogel and lyotropic liquid crystals were spatially heterogeneous on the comparable or at a smaller length scale less than the characteristic length of network and interfacial structures, and on the time scale shorter than the relaxation time.

UR - http://www.scopus.com/inward/record.url?scp=85013223032&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85013223032&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:85013223032

VL - 44

SP - 245

EP - 252

JO - Nihon Reoroji Gakkaishi

JF - Nihon Reoroji Gakkaishi

SN - 0387-1533

IS - 5

ER -