Dresden 2014 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 25: Wetting, Superamphiophobicity, Micro- and Nanofluidics II
CPP 25.2: Vortrag
Dienstag, 1. April 2014, 15:30–15:45, ZEU 222
Mode Coupling of Phonons in a Dense One-Dimensional Microfluidic Crystal — •jean baptiste fleury1, Ulf D Schiller2, Shashi thutupalli3, Gerhard Gompper2, and Ralf Seemann1,3 — 1Saarland University, Saarbrücken, Germany — 2Forschungszentrum Jülich, Jülich, Germany — 3Max Planck Institute for Dynamics and Self-Organization, Göttingen, Germany
Long-living coupled transverse and longitudinal phonon modes are explored in dense and regular arrangements of flat microfluidic droplets. The collective oscillations are driven by hydrodynamic interactions between the confined droplets and can be excited in a controlled way. Experimental results are quantitatively compared to simulation results obtained by multi-particle collision dynamics. The observed transverse modes are acoustic phonons and can be described by a linearized far-field theory, whereas the longitudinal modes arise from a non-linear mode coupling due to the lateral variation of the flow field under confinement[1].
[1]Jean-Baptiste Fleury, Ulf D Schiller, Shashi Thutupalli, Gerhard Gompper and Ralf Seemann (Submitted) arXiv:1310.3655v1