Dresden 2020 – wissenschaftliches Programm
Die DPG-Frühjahrstagung in Dresden musste abgesagt werden! Lesen Sie mehr ...
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 50: Poster Session III
CPP 50.37: Poster
Dienstag, 17. März 2020, 14:00–16:00, P1C
Mircorheology of Newtonian fluid — •Pankaj Pandey1, Patrick Galenschowski2, Christian Wagner3, and Thomas John4 — 1Saarland University Campus, building E2 6 Saarbrücken Germany — 2Saarland University Campus, building E2 6 Saarbrücken Germany — 3Saarland University Campus, building E2 6 Saarbrücken Germany — 4Saarland University Campus, building E2 6 Saarbrücken Germany
We have studied polystyrene particle in Newtonian (deionized water and Sucrose solution) fluid by dark field microscopy (DFM). Trajectory of the particle is analyzed in terms of the mean squared displacement (MSD). We have recorded very long trajectories comprising 10000 number of frames with 10 frames per second at room temperature. This enabled a statistical analysis of the resulting MSD curves as a function of the time. We find that the relative error of the diffusion coefficient can be minimized by taking long trajectory lengths into account by fitting the time dependent MSD curves with power law. Finally, we found these results are very good qualitative and quantitative agreement between experiment and theory.