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SUMMARY:Tales of tails. Swimming statistics of unicellular eukaryotes and 
 dynamic buckling of elastic filaments - Maciej Lisicki (University of Camb
 ridge)
DTSTART:20181122T130000Z
DTEND:20181122T140000Z
UID:TALK115045@talks.cam.ac.uk
CONTACT:Anne Herrmann
DESCRIPTION:Microscale propulsion requires adaptation of swimming strategi
 es to the limitations of Stokes flow. Within the host of unicellular micro
 organisms\, myriads of different forms and functions are exploited to achi
 eve swimming. This richness of behaviour has inspired three research stori
 es. \nIn the first tale\, we have collected data from the available litera
 ture on swimming eukaryotes and explore the statistical variability of the
 ir swimming speed. A careful examination of the statistical properties of 
 the speed distribution for both flagellates and ciliates shows that they a
 re not only both captured by lognormal distributions but that\, upon resca
 ling the data by the average swimming speed for each data set\, the speed 
 distributions in both types of organisms are almost identical. \nIn the se
 cond tale\, our data for ciliates are useful to deduce whether their cilia
  beat at a constant force\, or rather operate at a constant stress. \nIn t
 he last story of tails\, we look at a biomimetic system of thin elastic fi
 laments extruded into the fluid and observe their dynamic buckling and fol
 ding\, which gives an insight into their elastic properties. 
LOCATION:MR11\, Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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