Investigation of the dynamical slowing down process in soft glassy colloidal suspensions: comparisons with supercooled liquids

Saha, Debasish; Joshi, Yogesh M.; Bandyopadhyay, Ranjini

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/6027

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DC Field	Value	Language
dc.contributor.author	Saha, Debasish	-
dc.contributor.author	Joshi, Yogesh M.	-
dc.contributor.author	Bandyopadhyay, Ranjini	-
dc.date.accessioned	2014-11-20T04:31:51Z	-
dc.date.available	2014-11-20T04:31:51Z	-
dc.date.issued	2014-05-14	-
dc.identifier.citation	Soft Matter, 2014, Vol. 10, p3292	en
dc.identifier.issn	1744-6848 (Online)	-
dc.identifier.issn	1744-683X	-
dc.identifier.uri	http://hdl.handle.net/2289/6027	-
dc.description	Restricted Access.	en
dc.description.abstract	The primary and secondary relaxation timescales of aging colloidal suspensions of Laponite are estimated from intensity autocorrelation functions obtained in dynamic light scattering (DLS) experiments. The dynamical slowing down of these relaxation processes are compared with observations in fragile supercooled liquids by establishing a one-to-one mapping between the waiting time since filtration of a Laponite suspension and the inverse of the temperature of a supercooled liquid that is rapidly quenched towards its glass transition temperature. New timescales associated with primary and secondary relaxation processes, such as the characteristic timescale associated with the slowdown of the secondary relaxation process and the glass transition time, are extracted to describe the phenomenon of dynamical arrest in Laponite suspensions. In results that are strongly reminiscent of those extracted from supercooled liquids approaching their glass transitions, it is demonstrated that a strong coupling exists between the primary and secondary relaxation processes of aging Laponite suspensions in the cage-forming regime. Furthermore, the experimental data presented here clearly demonstrate the self-similar nature of the aging dynamics of Laponite suspensions within a range of sample concentrations.	en
dc.language.iso	en	en
dc.publisher	Royal Society of Chemistry	en
dc.relation.uri	http://arxiv.org/abs/1312.1098	en
dc.relation.uri	http://dx.doi.org/10.1039/C4SM00187G	en
dc.rights	2014 Royal Society of Chemistry	en
dc.title	Investigation of the dynamical slowing down process in soft glassy colloidal suspensions: comparisons with supercooled liquids	en
dc.type	Article	en
Appears in Collections:	Research Papers (SCM)

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