Skip to Main content Skip to Navigation
Journal articles

Symmetry-breaking phase transitions in highly concentrated semen

Abstract : New experimental evidence of self-motion of a confined active suspension is presented. Depositing fresh semen sample in an annular shaped microfluidic chip leads to a spontaneous vortex state of the fluid at sufficiently large sperm concentration. The rotation occurs unpredictably clockwise or counterclockwise and is robust and stable. Furthermore, for highly active and concentrated semen, richer dynamics can occur such as self-sustained or damped rotation oscillations. Experimental results obtained with systematic dilution provide a clear evidence of a phase transition towards collective motion associated with local alignment of spermatozoa akin to the Vicsek model. A macroscopic theory based on previously derived self-organized hydrodynamics models is adapted to this context and provides predictions consistent with the observed stationary motion.
Complete list of metadatas

Cited literature [59 references]  Display  Hide  Download

https://hal.archives-ouvertes.fr/hal-01380772
Contributor : Open Archive Toulouse Archive Ouverte (oatao) <>
Submitted on : Thursday, October 13, 2016 - 2:34:29 PM
Last modification on : Tuesday, June 16, 2020 - 3:50:48 AM
Long-term archiving on: : Saturday, February 4, 2017 - 9:40:34 PM

File

creppy_16244.pdf
Files produced by the author(s)

Licence


Distributed under a Creative Commons Attribution 4.0 International License

Identifiers

Citation

Adama Kpatagnon Creppy, Franck Plouraboué, Olivier Praud, Xavier Druart, Sébastien Cazin, et al.. Symmetry-breaking phase transitions in highly concentrated semen. Journal of the Royal Society Interface, the Royal Society, 2016, vol. 13 (n° 123), pp. 1-12. ⟨10.1098/rsif.2016.0575⟩. ⟨hal-01380772⟩

Share

Metrics

Record views

455

Files downloads

287