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SUMMARY:SPT: Slender Phoretic Theory of Chemically Active Filaments - Pana
 yiota Katsamba (University of Birmingham)
DTSTART:20191114T130000Z
DTEND:20191114T140000Z
UID:TALK134749@talks.cam.ac.uk
CONTACT:Anne Herrmann
DESCRIPTION:Artificial microswimmers have the potential to revolutionise n
 oninvasive medicine and microfluidics. A large class of these these swimme
 rs self-propel by generating concentration gradients in a surrounding solu
 te\, and recent work has suggested that fabricating such swimmers from fle
 xible\, thermoresponsive filaments allows their precision navigation. In o
 rder to efficiently model such swimmers\, we develop a Slender Phoretic Th
 eory (SPT) for the chemohydro- dynamics of microscale autophoretic filamen
 ts of arbitrary centreline\, as a one- dimensional substitute for ineffici
 ent numerical solution of 3D partial differential equations. We show that\
 , unlike other slender body theories\, azimuthal effects that appear at fi
 rst order for curved shapes have a leading order contribution to the swimm
 ing kinematics\, and consider the effects of curvature for U-\, S- and hel
 ical filament shapes.
LOCATION:MR14\,  Centre for Mathematical Sciences\, Wilberforce Road\, Cam
 bridge
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