Dresden 2020 – scientific programme

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BP: Fachverband Biologische Physik

BP 4: Membranes and Vesicles (joint session BP/CPP)

BP 4.8: Talk

Monday, March 16, 2020, 12:00–12:15, ZEU 250

Statistics on Red Blood Cell Flow in Microchannels — •Felix Maurer, Thomas John, and Christian Wagner — Experimentalphysik Universität des Saarlandes

Half of the human blood volume consists of erythrocytes, also refered to as red blood cells. Most of the pressure induced by the heart muscle is used for microcirculation through capillary vessels. Capillary flow is strongly characterized by the soft body physics of red blood cells often described as vesicles. We established an experimental method to record individual cells during flow through straight artificial microfluidic channels. Stationary shapes could be classified. We measured the speed as a function of position at different external pressure drops and channel geometries. The velocity distributions reveal intrinsic differences between individual erythrocytes. These have been found to be the root cause of pairing in this setup. Interaction forces have no influence on the examined flow.