Berlin 2005 – wissenschaftliches Programm

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CPP: Chemische Physik und Polymerphysik

CPP 5: SYMPOSIUM: Dynamics of multi-component fluids POSTER

CPP 5.30: Poster

Freitag, 4. März 2005, 17:15–19:00, Poster TU D

Dynamics of Dense Spatial Networks in Structured Fluids: Data reduction and Visualization — •R. Magerle, H. Schoberth, and S. Scherdel — Physikalische Chemie II, Universität Bayreuth

Block copolymers and surfactant mesophases have spatially complex structures. The density distribution of components is usually displayed as an isodensity surface. However, the resulting networks are often very dense and obstruct the view into the volume of the data set. Therefore, the structure and dynamics of defects and grain boundaries is very difficult to follow. We reduce the data to their minimal features: connections are represented as thin smooth lines and branching points as small spheres of different color. The network dynamics is rendered with a tool for protein visualization. Thereby large data streams are efficiently reduced and can be grasped within seconds. As an example we present the dynamics of a transient defect in a thin film of block copolymer. The microdomain structure resembles the gyroid-to-cylinder transition investigated recently by M. Matsen [PRL 80, 4470 (1998)]. Our computer simulation based on dynamical density functional theory predicts the same structure and orientation of the defect, however, a different dynamics where one connection forms after the other.