Veranstaltungskalender

Am Max-Planck-Institut für Polymerforschung finden regelmäßig wissenschaftliche wie auch populärwissenschaftliche Veranstaltungen und Konferenzen statt. Hier finden Sie eine Übersicht über zukünftig stattfindende Veranstaltungen.

Field theoretic simulations of block copolymers at realistic molecular weights

Block copolymers are known for their elaborate microphase separating capabilities. Due to the many tuning parameters a predictive modelling approach is required. Molecular dynamics for such large system sizes is expensive. On the other hand, self-consistent field theory is capable of simulating much larger systems, but its mean-field based approximation only becomes correct when the chain density becomes unrealistically high. As a result some experimental effects such as a first order order-to-disorder phase transition are not reproduced. Field-theoretic simulations, where fields are not constrained to their mean field value but allowed to fluctuate, bridge the gap between these methods. I will give an introduction into this method, with some of the associated phenomena such as the ultraviolet divergence, and successful applications in symmetric block copolymers and block copolymer-homopolymer blends. [mehr]
Zur Redakteursansicht