415 citations · 1.4k across the 20 of their papers we have counts for
21 papers
Emergence of beating in a magnetic flagellum consisting of active bots
Francisca Guzmán-Lastra, Daniel Hernández, Nicolás Quintriqueo +2
We investigate the emergence of flagellar beating in chains of magnetic self--propelled particles (MSPPs) built from centimeter--scale vibrating robots (Hexbugs) with embedded neod…
Confined floating active carpets generate coherent vortical flows that enhance transport
Felipe A. Barros, Italo Salas, Enkeleida Lushi +1
Slicks are thin viscous films that can be found at the air--water interface of water bodies such as lakes, rivers and oceans. These micro-layers are enriched in surfactants, organi…
Micro-swimmer locomotion and hydrodynamics in Brinkman Flows
Francisca Guzman-Lastra, Enkeleida Lushi
Micro-swimmer locomotion in heterogeneous media is increasingly relevant in biological physics due to the prevalence of microorganisms in complex environments. A model for such por…
Chemotactic aggregation dynamics of micro-swimmers in Brinkman flows
Yasser Almoteri, Enkeleida Lushi
We study through analysis and simulations of a continuum model the collective chemotactic dynamics of micro-swimmers immersed in viscous Brinkman flows. The Brinkman viscous flow a…
Micro-swimmer collective dynamics in Brinkman flows
Yasser Almoteri, Enkeleida Lushi
Suspensions of swimming micro-organisms are known to undergo intricate collective dynamics as a result of hydrodynamic and collision interactions. Micro-swimmers, such as bacteria…
Cross-stream migration of a vesicle in vortical flows
Gökberk Kabacaoğlu, Enkeleida Lushi
We use numerical simulations to systematically investigate the vesicle dynamics in two-dimensional (2D) Taylor-Green vortex flow in the absence of inertial forces. Vesicles are hig…
Metallic Microswimmers Driven up the Wall by Gravity
Quentin Brosseau, Florencio Balboa Usabiaga, Enkeleida Lushi +5
As a natural and functional behavior, various microorganisms exhibit gravitaxis by orienting and swimming upwards against gravity. Swimming autophoretic nanomotors described herein…
Relating microswimmer synthesis to rheotactic tunability
Quentin Brosseau, Florencio Balboa Usabiaga, Enkeleida Lushi +5
We explore the behavior of micron-scale autophoretic Janus (Au/Pt) rods, having various Au/Pt length ratios, swimming near a wall in an imposed background flow. We find that their…
Scattering of biflagellate microswimmers from surfaces
Enkeleida Lushi, Vasily Kantsler, Raymond E. Goldstein
We use a three-bead-spring model to investigate the dynamics of bi-flagellate micro-swimmers near a surface. While the primary dynamics and scattering are governed by geometric-dep…
Directed collective motion of bacteria under channel confinement
Hugo Wioland, Enkeleida Lushi, Raymond E. Goldstein
Dense suspensions of swimming bacteria are known to exhibit collective behaviour arising from the interplay of steric and hydrodynamic interactions. Unconfined suspensions exhibit…
Stability and dynamics of anisotropically-tumbling chemotactic swimmers
Enkeleida Lushi
Micro-swimmers such as bacteria perform random walks known as run-and-tumbles to move up chemo-attractant gradients and as a result aggregate with others. It is also known that suc…
Dynamics of inert spheres in active suspensions of micro-rotors
Kyongmin Yeo, Enkeleida Lushi, Petia M. Vlahovska
Inert particles suspended in active fluids of self-propelled particles are known to often exhibit enhanced diffusion and novel coherent structures. Here we numerically investigate…
Microalgae scatter off solid surfaces by hydrodynamic and contact forces
Matteo Contino, Enkeleida Lushi, Idan Tuval +2
Interactions between microorganisms and solid boundaries play an important role in biological processes, like egg fertilisation, biofilm formation and soil colonisation, where micr…
Periodic and chaotic orbits of plane-confined micro-rotors in creeping flows
Enkeleida Lushi, Petia M. Vlahovska
We explore theoretically the complex dynamics and emergent behaviors of spinning spheres immersed in viscous fluid. The particles are coupled to each-other via the fluid in which t…
Collective dynamics in a binary mixture of hydrodynamically coupled micro-rotors
Kyongmin Yeo, Enkeleida Lushi, Petia M. Vlahovska
We study, numerically, the collective dynamics of self-rotating nonaligning particles by considering a monolayer of spheres driven by constant clockwise or counterclockwise torques…
Fluid Flows Created by Swimming Bacteria Drive Self-Organization in Confined Suspensions
Enkeleida Lushi, Hugo Wioland, Raymond E Goldstein
Concentrated suspensions of swimming microorganisms and other forms of active matter are known to display complex, self-organized spatio-temporal patterns on scales large compared…
Accumulation of motile elongated micro-organisms in turbulence
Caijuan Zhan, Gaetano Sardina, Enkeleida Lushi +1
We study the effect of turbulence on marine life by performing numerical simulations of motile microorganisms, modelled as prolate spheroids, in isotropic homogeneous turbulence. W…
Auto-chemotactic micro-swimmer suspensions: modeling, analysis and simulations
Enkeleida Lushi, Raymond E. Goldstein, Michael J. Shelley
Microorganisms can preferentially orient and move along gradients of a chemo-attractant (i.e., chemotax) while colonies of many microorganisms can collectively undergo complex dyna…
Spontaneous ordering of a bacterial drop into a spiral vortex
Hugo Wioland, Enkeleida Lushi, Raymond E. Goldstein
In this fluid dynamics video we explore the nature and causes of the spontaneous ordering that emerges in a dense bacterial suspension under confinement. Recent experiments with B.…
Collective Chemotactic Dynamics in the Presence of Self-Generated Fluid Flows
Enkeleida Lushi, Raymond E. Goldstein, Michael J. Shelley
In micro-swimmer suspensions locomotion necessarily generates fluid motion, and it is known that such flows can lead to collective behavior from unbiased swimming. We examine the c…
An inverse Gaussian plume approach for estimating atmospheric pollutant emissions from multiple point sources
Enkeleida Lushi, John M. Stockie
A method is developed for estimating the emission rates of contaminants into the atmosphere from multiple point sources using measurements of particulate material deposited at grou…