糖心TV Complexity Science Events
Complexity Centre and MathSys CDT events carry priority over room D1.07.
To book D1.07 please email Sheetal dot Sharma at warwick dot ac dot uk
Please note that your event booking is for D1.07 only. The adjacent common room is a private area for the MathSys Centre that cannot used as part of your booking.
Complexity Forum: Gareth Alexander (糖心TV)
Speaker: Gareth Alexander (糖心TV Physics and Centre for Complexity Science)
Title: Self-diffusiophoresis in the advection dominated regime
Abstract:
In both biological and artificial systems, concentration gradients can serve as a convenient mechanism for manipulating particles and generating motility. Particles that interact with a solute will move along its gradient; if they themselves generate the gradient, this mechanism provides a means of self-propulsion. We consider a version of this type of motility appropriate to certain biological systems where polymeric filaments provide the concentration gradient. As the filament diffusion is small, this corresponds to a regime of large P\'eclet number where the motion is dominated by the effects of fluid advection. The nature of such concentration-gradient-driven motion in the advective regime differs in certain fundamental respects from the same process at low P\'eclet number. In particular, we show that out of four broad scenarios of steady state motion at low P\'eclet number, only two remain viable in the strongly advecting limit.
Lunch: Group 2