Rheological Investigation of Ageing Dynamics in Soft Solids of Laponite

by Prof. Yogesh M. Joshi (Department of Chemical Engineering, Indian Institute of Technology- Kanpur, INDIA.)

Wednesday 14 May 2008, 14:00 → 15:00 Europe/Rome

aula 8 (Dipartimento di Fisica - Edificio Fermi)

Aqueous suspension of laponite is a model soft glassy material and undergoes structural evolution with the ageing time. Increase in the concentration of salt is known to enhance attraction among the laponite particles that modifies the microstructure of the suspension significantly. Changes in the microstructure have profound effect on the time dependent rheological behavior of the system. In this talk we discuss how rheological tools can be employed to infer micro-structural information of soft solids of laponite.