292 citations · 1.2k across the 41 of their papers we have counts for
18 papers · 1 filter
Morphodynamics of lipid vesicles under osmotic forcing
Nicholas Broussinos, David Saintillan
We investigate the dynamics of spherical lipid vesicles subjected to an osmotic shock using continuum simulations of a permeable, area-incompressible fluid membrane with bending el…
Geodesic Trapping and Escape of Active Particles on Curved Surfaces
Yuzhu Chen, Vishal P. Patil, David Saintillan
Active particles on curved surfaces can become trapped along closed geodesics even without physical barriers. We show that escape from these geometric traps exposes a fundamental d…
Pore-scale distribution and transport of active particles in a two-dimensional lattice
Akhil Varma, David Saintillan
Suspensions of motile microswimmers such as bacteria and other active colloids frequently encounter porous environments where obstacles and complex shear flows strongly influence t…
Reversibility, Chaos, and Attractors in Periodically Sheared Elastic Filaments
Francesco Bonacci, Brato Chakrabarti, Olivia du Roure +2
The dynamics of filaments in flow are central to understanding a wide range of biological and soft-matter systems, yet their behavior under time-dependent forcing remains poorly un…
Hydrodynamics converts chiral flagellar rotation into contactless actuation of microdiscs
Daniel Grober, Tanumoy Dhar, David Saintillan +1
Motile bacteria are a wonder of nature's engineering: microscopic engines that transduce biochemical energy into the work they require to explore their environment. This added ener…
Active Hydrodynamic Theory of Euchromatin and Heterochromatin
S. Alex Rautu, Alexandra Zidovska, David Saintillan +1
The genome contains genetic information essential for cell's life. The genome's spatial organization inside the cell nucleus is critical for its proper function including gene regu…
Stability of co-annular active and passive confined fluids
Tanumoy Dhar, Michael J. Shelley, David Saintillan
The translation and shape deformations of a passive viscous Newtonian droplet immersed in an active nematic liquid crystal under circular confinement are analyzed using a linear st…
The 2024 Motile Active Matter Roadmap
Gerhard Gompper, Howard A. Stone, Christina Kurzthaler +29
Activity and autonomous motion are fundamental aspects of many living and engineering systems. Here, the scale of biological agents covers a wide range, from nanomotors, cytoskelet…
Active nematic fluids on Riemannian 2-manifolds
Cuncheng Zhu, David Saintillan, Albert Chern
Recent advances in cell biology and experimental techniques using reconstituted cell extracts have generated significant interest in understanding how geometry and topology influen…
Self-organized dynamics of a viscous drop with interfacial nematic activity
Mohammadhossein Firouznia, David Saintillan
We study emergent dynamics in a viscous drop subject to interfacial nematic activity. Using hydrodynamic simulations, we show how the interplay of nematodynamics, activity-driven f…
Active transport of a passive colloid in a bath of run-and-tumble particles
Tanumoy Dhar, David Saintillan
The dispersion of a passive colloid immersed in a bath of non-interacting and non-Brownian run-and-tumble microswimmers in two dimensions is analyzed using stochastic simulations a…
Dispersion of run-and-tumble microswimmers through disordered media
David Saintillan
Understanding the transport properties of microorganisms and self-propelled particles in porous media has important implications for human health as well as microbial ecology. In f…
Self-induced hydrodynamic coil-stretch transition of active polymers
Achal Mahajan, David Saintillan
We analyze the conformational dynamics and statistical properties of an active polymer model. The polymer is described as a freely-jointed bead-rod chain subject to stochastic acti…
Curvature-driven feedback on aggregation-diffusion of proteins in lipid bilayers
Arijit Mahapatra, David Saintillan, Padmini Rangamani
Membrane bending is an extensively studied problem from both modeling and experimental perspectives because of the wide implications of curvature generation in cell biology. Many o…
Trapping, gliding, vaulting: Transport of semiflexible polymers in periodic post arrays
Brato Chakrabarti, Charles Gaillard, David Saintillan
The transport of deformable particles through porous media underlies a wealth of applications ranging from filtration to oil recovery to the transport and spreading of biological a…
Transport Phenomena in Fluid Films with Curvature Elasticity
Arijit Mahapatra, David Saintillan, Padmini Rangamani
Cellular membranes are elastic lipid bilayers that contain a variety of proteins, including ion channels, receptors, and scaffolding proteins. These proteins are known to diffuse i…
Emergent vortices in populations of colloidal rollers
Antoine Bricard, Jean-Baptiste-Caussin, Debasish Das +7
Coherent vortical motion has been reported in a wide variety of populations including living organisms (bacteria, fishes, human crowds) and synthetic active matter (shaken grains,…
Globally aligned states and hydrodynamic traffic jams in confined active suspensions
Adrien Lefauve, David Saintillan
Strongly confined active liquids are subject to unique hydrodynamic interactions due to momentum screening and lubricated friction by the confining walls. Using numerical simulatio…