87 citations · 331 across the 14 of their papers we have counts for
14 papers
Enhancement and Suppression of Active Particle Movement Due to Membrane Deformations
Adam Hitin Bialus, Bhargav Rallabandi, Naomi Oppenheimer
Microswimmers and active colloids often move in confined systems, including those involving interfaces. Such interfaces, especially at the microscale, may deform in response to the…
Dynamical Spreading and Memory Retention Under Power Law Potential
Ido Fanto, Yuval Rosenblum, Ori Harel +2
We study the overdamped dynamic spreading of a suspension of particles under a repulsive power law potential. We predict that the suspension spreads in a self-similar form, with it…
Hydrodynamics of molecular rotors in lipid membranes
Vinny C. Suja, Naomi Oppenheimer, Howard A. Stone
Molecular rotors form twisted conformations upon photoexcitation, with their fluorescent relaxation time serving as a measure of viscosity. They have been used to assess membrane v…
Hamiltonian Dynamics and Structural States of Two-Dimensional Microswimmers
Yuval Shoham, Naomi Oppenheimer
We show that a two-dimensional system of flocking microswimmers interacting hydrodynamically can be expressed using a Hamiltonian formalism. The Hamiltonian depends strictly on the…
Compact expansion of a repulsive suspension
Matan Yah Ben Zion, Naomi Oppenheimer
Short-range repulsion governs the dynamics of matter from atoms to animals. Using theory, simulations, and experiments, we find that an ensemble of repulsive particles spreads comp…
Hyperuniformity and phase enrichment in vortex and rotor assemblies
Naomi Oppenheimer, David B. Stein, Matan Yah Ben Zion +1
Ensembles of particles rotating in a two-dimensional fluid can exhibit chaotic dynamics yet develop signatures of hidden order. Such "rotors" are found in the natural world spannin…
Vortex Flows and Streamline Topology in Curved Biological Membranes
Rickmoy Samanta, Naomi Oppenheimer
When considering flows in biological membranes, they are usually treated as flat, though more often than not, they are curved surfaces, even extremely curved, as in the case of the…
Fast crystallization of rotating membrane proteins
Naomi Oppenheimer, David B. Stein, Michael J. Shelley
We examine the interactions between actively rotating proteins moving in a membrane. Experimental evidence suggests that such rotor proteins, like the ATP synthases of the inner mi…
Surfing its own wave: hydroelasticity of a particle near a membrane
Bhargav Rallabandi, Naomi Oppenheimer, Matan Yah Ben Zion +1
We show using theory and experiments that a small particle moving along an elastic membrane through a viscous fluid is repelled from the membrane due to hydro-elastic forces. The v…
A shapeable material without plastic deformation
Naomi Oppenheimer, Thomas A. Witten
Randomly crumpled sheets have shape memory. In order to understand the basis of this form of memory, we simulate triangular lattices of springs whose lengths are altered to create…
Anomalously fast kinetics of lipid monolayer buckling
Naomi Oppenheimer, Haim Diamant, Thomas. A. Witten
We re-examine previous observations of folding kinetics of compressed lipid monolayers in light of the accepted mechanical buckling mechanism recently proposed [L. Pocivavsek et al…
Dynamics of membranes with immobile inclusions
Naomi Oppenheimer, Haim Diamant
Cell membranes are anchored to the cytoskeleton via immobile inclusions. We investigate the effect of such anchors on the in-plane dynamics of a fluid membrane and mobile inclusion…
Correlated dynamics of inclusions in a supported membrane
Naomi Oppenheimer, Haim Diamant
The hydrodynamic theory of heterogeneous fluid membranes is extended to the case of a membrane adjacent to a solid substrate. We derive the coupling diffusion coefficients of pairs…
Correlated diffusion of membrane proteins and their effect on membrane viscosity
Naomi Oppenheimer, Haim Diamant
We extend the Saffman theory of membrane hydrodynamics to account for the correlated motion of membrane proteins, along with the effect of protein concentration on that correlation…