Age-dependent relaxation times of soft colloidal suspensions with tunable glassiness

Dirk Van Den Ende, Eko H. Purnomo, Siva A. Vanapalli, Frieder Mugele

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


We report an aging soft colloidal suspension that can be tuned continuously and reversibly between the glass at low temperature T and the liquid state at high temperatures. The glassiness is characterized by a noise temperature x ranging from 0.5 to above 3.0. The glass transition temperature has been obtained as a function of the weight concentration of microgel particles. We also probe the evolution of the structural relaxation time τs(t) of this system in the glass state, using both particle tracking micro-rheology and linear oscillatory measurements in combination with the soft glassy rheology model. Both methods consistently yield a linear increase of τs(t) with age.

Original languageEnglish
Title of host publicationThe XVth International Congress on Rheology - The Society of Rheology 80th Annual Meeting
Number of pages3
StatePublished - 2008
Event15th International Congress on Rheology - Monterey, CA, United States
Duration: Aug 3 2008Aug 8 2008

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference15th International Congress on Rheology
Country/TerritoryUnited States
CityMonterey, CA


Dive into the research topics of 'Age-dependent relaxation times of soft colloidal suspensions with tunable glassiness'. Together they form a unique fingerprint.

Cite this