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Self-organization of patchy colloidal particles: 2 & 3D

Presented by: 
Margarida Telo da Gama
Monday 13th May 2019 - 11:10 to 11:50
INI Seminar Room 1
Session Title: 
A part of the celebration of Women in Materials Science (WMS)
We investigate the self-organization of patchy colloidal particles deposited on flat substrates in three (2+1) and two (1+1) spatial dimensions. We propose and use a simple stochastic model for the interaction between the particles, which allows the simulation of very large systems, to probe the long time and large-scale structure of the deposited films. The latter exhibit well defined surface, liquid and interfacial regions except when the growth is dominated by the formation of chains, which occurs for systems with an effective valence close to two. We also investigate the interfacial roughening in (1+1) systems and compare our results with those obtained experimentally for evaporating droplets. We find, in line with the experiments, that when the film growth is dominated by chains the generic Kardar-Parisi-Zhang (KPZ) interfacial roughening is replaced by quenched KPZ. We discuss this somewhat surprising result.
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Presentation Material: 
University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons