113 citations · 259 across the 11 of their papers we have counts for
14 papers
Oscillation in the SIRS model
D. Marenduzzo, A. T. Brown, C. Miller +1
We study the SIRS epidemic model, both analytically and on a square lattice. The analytic model has two stable solutions, post outbreak/epidemic (no infected, ) and the endemi…
Encapsulated bacteria deform lipid vesicles into flagellated swimmers
Lucas Le Nagard, Aidan T. Brown, Angela Dawson +3
We study a synthetic system of motile Escherichia coli bacteria encapsulated inside giant lipid vesicles. Forces exerted by the bacteria on the inner side of the membrane are suffi…
Diffusion, phase behavior and gelation in a two-dimensional layer of colloids in osmotic equilibrium with a polymer reservoir
Sam E Griffiths, Nick Koumakis, Aidan T Brown +3
The addition of enough non-adsorbing polymer to an otherwise stable colloidal suspension gives rise to a variety of phase behavior and kinetic arrest due to the depletion attractio…
Spreading dynamics of an infection in a growing population
Rory Claydon, Samuel Gartenstein, Aidan T. Brown
Bacteriophages spreading through populations of bacteria offer relatively simple, tuneable systems for testing mathematical models of range expansion. However, such models typicall…
Soft matter science and the COVID-19 pandemic
Wilson C K Poon, Aidan T Brown, Susana O. L. Direito +9
Much of the science underpinning the global response to the COVID-19 pandemic lies in the soft matter domain. Coronaviruses are composite particles with a core of nucleic acids com…
Dynamic optical rectification and delivery of active particles
Nick Koumakis, Aidan T. Brown, Jochen Arlt +3
We use moving light patterns to control the motion of {\it Escherichia coli} bacteria whose motility is photo-activated. Varying the pattern speed controls the magnitude and direct…
Sedimentation of a rigid helix in viscous media
Martina Palusa, Joost de Graaf, Aidan Brown +1
We consider sedimentation of a rigid helical filament in a viscous fluid under gravity. In the Stokes limit, the drag forces and torques on the filament are approximated within the…
Probing the spatiotemporal dynamics of catalytic Janus particles with single-particle tracking and differential dynamic microscopy
Christina Kurzthaler, Clémence Devailly, Jochen Arlt +4
We demonstrate differential dynamic microscopy and particle tracking for the characterization of the spatiotemporal behavior of active Janus colloids in terms of the intermediate s…
Microfluidic Pumping by Micromolar Salt Concentrations
Ran Niu, Patrick Kreissl, Aidan T. Brown +5
An ion-exchange-resin-based microfluidic pump is introduced that utilizes trace amounts of ions to generate fluid flows. We show experimentally that our pump operates in almost dei…
Ionic Screening and Dissociation are Crucial for Understanding Chemical Self-Propulsion in Water
Aidan T. Brown, Wilson C. K. Poon, Christian Holm +1
Water is a polar solvent and hence supports the bulk dissociation of itself and its solutes into ions, and the re-association of these ions into neutral molecules in a dynamic equi…
Hydrodynamic oscillations and variable swimming speed in squirmers close to repulsive walls
Juho S. Lintuvuori, Aidan T. Brown, Kevin Stratford +1
We present a lattice Boltzmann study of the hydrodynamics of a fully resolved squirmer, radius R, confined in a slab of fluid between two no-slip walls. We show that the coupling b…
Particle-Size Effects in the Formation of Bicontinuous Pickering Emulsions
M. Reeves, A. T. Brown, A. B. Schofield +2
We demonstrate that the formation of bicontinuous emulsions stabilized by interfacial particles (bijels) is more robust when nanoparticles rather than microparticles are used. Emul…
Swimming in a Crystal:
Aidan T. Brown, Ioana D. Vladescu, Angela Dawson +4
We study catalytic Janus swimmers and Escherichia coli bacteria swimming in a two-dimensional colloidal crystal. The Janus swimmers orbit individual colloids and hop between colloi…
Ionic effects in self-propelled Pt-coated Janus swimmers
A. T. Brown, W. C. K Poon
Colloidal particles partially coated with platinum and dispersed in H2O2 solution are often used as model self-propelled colloids. Most current data suggest that neutral self-diffu…