Collective dynamics in suspensions
Enkeleida Lushi, Imperial College, London
Microorganisms play an important role in many biological and
phenomena. Recent research efforts have seek to use microorganisms
for various technological applications as well as design chemically
micro-particles that mimic microorganism locomotion. Understanding
of their locomotion and collective behavior is essential to
physical phenomena as well as how to best use them in applications.
Designing mathematical and computational models to be help by
in these endeavors is paramount.
In this talk I will introduce a minimalistic mathematical model for
particles that captures the far-field as well as near-field behavior
interactions of a pair micro-swimmers as observed in experiments.
interactions between the motile particles depend on their swimming
mechanism and this affects the collective motions. I will briefly
a novel computational model that enables us to trace the dynamics of
thousands of such motile interacting particles. The model
captures coherent structures of bacterial suspensions observed in
experiments. The microscopic characteristics of the swimmers can
the macroscopic properties of the suspension and fluid. Lastly,
applications of the method will be discussed, e.g. in for bacteria
suspensions or synthetic chemical particles.