10-16 June 2018
Dalhousie University
America/Halifax timezone
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POS-58 Study of a field-tunable colloid-polymer solution (SMC Poster)

12 Jun 2018, 18:00
1h 30m
SUB McInnes Hall (Dalhousie University)

SUB McInnes Hall

Dalhousie University

Speaker

Shivani Semwal (Memorial University)

Description

In a colloid-polymer mixture, non-adsorbing polymer controls the magnitude as well as the range of the interaction between the colloidal particles. In such a system, a network forming gel phase can be observed due to the adsorption of polymer on micrometer-sized colloidal particles. With tunable interactions, such systems could also be used for qualitative studies of phase transition kinetics.An easy and externally controllable tuning can be achieved by the application of AC external electric field to the colloid-polymer system. The external AC electric field induces dipolar interaction in a colloidal suspension which is an important driving force for nanoparticle self-organization. We will report the effect of an AC external field on the Brownian colloidal particles suspended in a polymer solution. Study of such tunable system can lead to the development of switchable and responsive materials.

Primary authors

Shivani Semwal (Memorial University) Dr Anand Yethiraj (Memorial University of Newfoundland)

Presentation Materials