University of Cambridge > > Engineering - Mechanics and Materials Seminar Series > Pressure-driven occlusive flow of a confined red blood cell

Pressure-driven occlusive flow of a confined red blood cell

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Ms Helen Gardner.

When red blood cells (RBCs) move through narrow capillaries in the microcirculation, they deform as they flow. In pathophysiological processes such as sickle cell disease and malaria, RBC motion and flow are severely restricted. To understand this threshold of occlusion, we used a combination of experiments and theory to study the motion of a single swollen RBC through a narrow glass capillary of varying inner diameter. By tracking the movement of the squeezed cell as it is driven by a controlled pressure drop, we measured the RBC velocity as a function of the pressure gradient as well as the local capillary diameter, and found that the effective blood viscosity in this regime increases with both decreasing RBC velocity and tube radius by following a power-law that depends upon the length of the confined cell. Our observations are consistent with a simple elasto-hydrodynamic model and highlight the role of lateral confinement in the occluded pressure-driven slow flow of soft confined objects.

This talk is part of the Engineering - Mechanics and Materials Seminar Series series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.


© 2006-2024, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity