Julia Yeomans OBE FRS: Publications

Tracer trajectories and displacement due to a micro-swimmer near a surface

Journal of Fluid Mechanics Cambridge University Press (CUP) 773 (2015) 498-519

Authors:

AJTM Mathijssen, DO Pushkin, JM Yeomans

Stabilization of active matter by flow-vortex lattices and defect ordering

(2015)

Authors:

Amin Doostmohammadi, Michael F Adamer, Sumesh P Thampi, Julia M Yeomans

Driven active and passive nematics

(2015)

Authors:

Sumesh P Thampi, Ramin Golestanian, Julia M Yeomans

Multi-Particle Collision Dynamics Algorithm for Nematic Fluids

(2015)

Authors:

Tyler N Shendruk, Julia M Yeomans

Hotspots of boundary accumulation: dynamics and statistics of micro-swimmers in flowing films

Journal of the Royal Society Interface Royal Society 13:115 (2015) 20150936

Authors:

Arnold JTM Mathijssen, Amin Doostmohammadi, Julia Yeomans, Tyler N Shendruk

Abstract:

Biological flows over surfaces and interfaces can result in accumulation hotspots or depleted voids of microorganisms in natural environments. Apprehending the mechanisms that lead to such distributions is essential for understanding biofilm initiation. Using a systematic framework, we resolve the dynamics and statistics of swimming microbes within flowing films, considering the impact of confinement through steric and hydrodynamic interactions, flow and motility, along with Brownian and run–tumble fluctuations. Micro-swimmers can be peeled off the solid wall above a critical flow strength. However, the interplay of flow and fluctuations causes organisms to migrate back towards the wall above a secondary critical value. Hence, faster flows may not always be the most efficacious strategy to discourage biofilm initiation. Moreover, we find run–tumble dynamics commonly used by flagellated microbes to be an intrinsically more successful strategy to escape from boundaries than equivalent levels of enhanced Brownian noise in ciliated organisms.

51��