Lane formation vs. cluster formation in two-dimensional square-shoulder systems -A genetic algorithm approachJ. Fornleitner and G. Kahl
Center for Computational Materials Science and Institut für Theoretische Physik, Technische Universität Wien Wiedner Hauptstraße 8-10, A-1040 Wien, Austria, EU
received 6 December 2007; accepted in final form 5 February 2008; published April 2008
published online 5 March 2008
Introducing genetic algorithms as a reliable and effective tool to find ordered equilibrium structures, we predict minimum energy configurations of the square shoulder system for different values of corona width . By varying systematically the pressure and choosing different values of we are able to identify complete sequences of minimum energy configurations. The results provide a deeper understanding of the system's strategies to arrange particles in an energetically optimised fashion, leading to the competing self-assembly scenarios of cluster formation vs. lane formation.
82.70.Dd - Colloids.
64.70.Nd - Structural transitions in nanoscale materials.
82.70.-y - Disperse systems; complex fluids .
© EPLA 2008