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SUMMARY:Dynamics and instabilities in growing fluid membranes - Jordan Shi
 vers (University of Chicago)
DTSTART:20231124T150000Z
DTEND:20231124T160000Z
UID:TALK208552@talks.cam.ac.uk
DESCRIPTION:The growth of lipid membranes plays a crucial role in many cel
 lular processes\, including the formation and spatial organization of vita
 l cellular organelles. These processes often involve a delicate interplay 
 of material exchange\, shape dynamics\, in-plane viscous flow\, and appare
 nt changes in material properties\, and understanding how they are control
 led remains an ongoing challenge. As a step in this direction\, we conside
 r a minimal fluid vesicle model in which growth is driven by coupling to a
  material reservoir. In simulations\, we find that sufficiently strong non
 equilibrium driving produces a striking morphological instability marked b
 y out-of-plane buckling and dramatic changes in growth rate. We then discu
 ss how the driving strength is quantitatively related to the growth rate\,
  size fluctuations\, and effective surface tension\, using a combination o
 f approaches from linear irreversible and stochastic thermodynamics. Our r
 esults suggest a multifaceted approach for understanding and constraining 
 the effects of active driving forces on the mechanics and morphology of bi
 ological matter.
LOCATION:Seminar Room 2\, Newton Institute
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