Symmetry-breaking phase transitions in highly concentrated semen.
Symmetry-breaking phase transitions in highly concentrated semen.
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DOI:
10.1098/rsif.2016.0575
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发表时间:
2016-10
期刊:
影响因子:
--
通讯作者:
Degond P
中科院分区:
文献类型:
--
作者:
Creppy A;Plouraboué F;Praud O;Druart X;Cazin S;Yu H;Degond P
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.
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影响因子:
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作者:
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通讯作者:
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DOI:
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发表时间:
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期刊:
JOURNAL OF REPRODUCTION AND FERTILITY
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发表时间:
2009-11-06
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