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SUMMARY:Synchronisation of Rotating Helical Filaments  - Maria Tatulea-Cod
 rean (Cambridge)
DTSTART:20200130T130000Z
DTEND:20200130T140000Z
UID:TALK138841@talks.cam.ac.uk
CONTACT:George Fortune
DESCRIPTION:Multi-flagellated bacteria swim by rotating rigid helical fila
 ments organised in bundles. The flagella within the bundle rotate in synch
 rony\, and it has long been postulated that hydrodynamic interactions faci
 litate synchronisation. Using a combined analytical(resistive-force theory
 ) and computational approach (slender-body theory)\, we derive from first 
 principles a dynamical system that explains the synchronisation of two rot
 ating helices through hydrodynamic interactions. This is the first analyti
 cal model that takes into account the helical geometry of bacterial flagel
 la\, making an important contribution to the mathematical understanding of
  a\nphenomenon revealed by computational studies more than a decade ago. I
 n the last part of the talk I will apply these results to real biological 
 data and address some aspects of the synchronisation of flagellar filament
 s in real bacteria.
LOCATION:MR11\, Centre for Mathematical Sciences\, Wilberforce Road\, Camb
 ridge
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