Graduate Seminar - Coupling Biochemistry, Mechanics, and Hydrodynamics to Model Sperm Motility, by Professor Sarah D. Olson, Department of Mathematical Sciences, Worcester Polytechnic Institute, Worcester, MA
Education - Colloquium - WPI Only
Wednesday, November 28, 2012
2:00 PM-3:00 PM
Sperm are known to exhibit two distinct types of motility. One is characterized by constant amplitude, symmetrical waveforms.
The other is characterized by asymmetrical waveforms, corresponding to an increase in calcium concentration within the
flagellum. The goal of this work is to model sperm swimming in a viscous, incompressible fluid using the method of regularized
Stokeslets. The mechanical forces are due to passive stiffness properties and active bending moments are a function of the
local calcium concentration. Results showing emergent waveforms, swimming speeds, and trajectories will be compared to
The hydrodynamic interactions of multiple sperm will also be presented and compared to experimental data, where sperm trains
and vortices are often seen.
Suggested Audiences: College
Last Modified: September 6, 2012 at 3:03 PM