Polyhedral colloidal 'rocks': low-dimensional networks
Condensed Matter journal club
Polyhedral colloidal 'rocks': low-dimensional networks
- Event time: 11:30am
- Event date: 22nd June 2012
- Speaker: Dr Andrew Schofield (School of Physics & Astronomy, University of Edinburgh)
- Location: Room 2511, James Clerk Maxwell Building (JCMB) James Clerk Maxwell Building Peter Guthrie Tait Road Edinburgh EH9 3FD GB
Event details
Abstract
We introduce a model system of anisotropic colloidal 'rocks'. Due to their shape, the bonding introduced via non-absorbing polymers is profoundly different from spherical particles: bonds between rocks are rigid against rotation, leading to strong frustration. We develop a geometric model which captures the essence of the rocks. Experiments and simulations show that the colloid geometry leads to structures of low fractal dimension. This is in stark contrast to gels of spheres, whose rigidity results from locally dense regions. At high density the rocks form a quasi one-component glassSoft Matter 8 Pages 1163-1167 (2012)
pdf version of paper
Author
Rice Rebecca; Roth Roland; Royall C. Patrick
About Condensed Matter journal club
Given the diversity of research in the CM group, chosen topics vary widely. We tend to stick to high-impact journals - Nature, Science, PNAS and PRL have been popular - but this is not prescriptive..