Seminarium "Modeling of Complex Systems"

Notion of driven systems was introduced and intensively developed by Georges Martin, Pascal Bellon et al many years ago, at first for nonequilibrium phase diagrams of materials under irradiation (introducing ballistic atomic jumps versus thermally activated jumps, and effective temperature). Later it was applied to ball milling and other ways of SPD (Severe Plastic Deformation). Recently we applied these concepts to model the formation of V2O5 nanobelts from powder in water under intensive stirring. In all these problems the openness of the system is realized by the external energy fluxes. Main point of this presentation is a phase and structural transformations (from nucleation to ripening) under the divergence of external matter fluxes. The following models will be presented shortly and compared with experimental data: Flux-driven nucleation of intermediate phases in the contact zone of two materials under sharp concentration gradients. Flux-driven ripening (coarsening) of IMC during soldering reaction Flux-driven cellular precipitation and flux-driven crystallization in solder joints (Cu-Sn-Cu and Cu-NiP-Sn systems) Flux-driven grain growth during deposition of thin film and during growth of polycrystalline intermediate phase. Flux-driven spinodal decomposition during co-deposition of thin film.”

The seminar will be held in hybrid mode: in room 1.40 (Faculty of Physics, UW) Join Zoom Meetinghttps://uw-edu-pl.zoom.us/j/94053335972?pwd=3ag9J6kMlYvbN6yJ7wmfo0G3bsaYWW.1Meeting ID: 940 5333 5972Passcode: 220764During the seminar the coffee and cakes are provided.