Session K1: Poster Session II (2:00pm - 5:00pm)
2:00 PM–2:00 PM, Tuesday, March 22, 2011
Room: Hall D
Sponsoring Unit:
APS
Abstract ID: BAPS.2011.MAR.K1.231
Abstract: K1.00231 : Front instabilities, confinement effect and fracture in drying colloidal nanoparticle
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Abstract 
Author:
Deeder Aurongzeb
(The University of Akron, Department of Polymer Science.)
Drying colloidal suspension of oxide nanoparticle can fracture in fractal patterns. While similar in size TiO$_{2}$ and Al$_{2}$O$_{3}$ particles can fracture differently. We found that Alumina nanoparticle forms radially inward crack from the edge of the droplet or planer film like fluid while Titania nanoparticle form fractal cracks. Using polarized light we observe stress field formation during evaporation and crack growth. We find that crack direction is driven by surface tension rather than thermal energy of the suspended nanoparticle. Evaporation based nanoparticle assemble and effect of confinement and electric current will be also discussed.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2011.MAR.K1.231