218 citations · 552 across the 16 of their papers we have counts for
16 papers
Control of filament network rigidity by the condensation of crowding molecules
Jiyong Cheon, Zhengyan Lin, Dean Kim +2
Understanding how liquid-liquid phase separation impacts the mechanics of filament networks is a fundamental physical problem at the heart of biological cellular processes and soft…
Droplet coalescence in fluids obeying Darcy's law
Jing Wang, Haicen Yue, Nandish Vora +4
During drop coalescence, a connecting bridge of fluid forms and rapidly expands due to surface tension. For spherical drops, these dynamics are well understood in both the viscous…
Active assembly and non-reciprocal dynamics of elastic membranes
John Berezney, Sattvic Ray, Itamar Kolvin +6
Equilibrium self-assembly and conventional materials processing techniques fall far short of mimicking dynamic self-actuating processes that are commonplace throughout biology. To…
Asymmetric fluctuations and self-folding of active interfaces
Liang Zhao, Paarth Gulati, Fernando Caballero +4
We study the structure and dynamics of the interface separating a passive fluid from a microtubule-based active fluid. Turbulent-like active flows power giant interfacial fluctuati…
Traveling waves at the surface of active liquid crystals
Paarth Gulati, Fernando Caballero, Itamar Kolvin +2
Active liquid crystals exert nonequilibrium stresses on their surroundings through constant consumption of energy, giving rise to dynamical steady states not present in equilibrium…
Dual Role for Heterogeneity in Dynamic Fracture
Itamar Kolvin, Mokhtar Adda-Bedia
We approach the problem of heterogeneous dynamic fracture by considering spatiotemporal perturbations to planar crack fronts. Front propagation is governed by local energy balance…
A comprehensive study of nonlinear perturbations in the dynamics of planar crack fronts
Itamar Kolvin, Mokhtar Adda-Bedia
The interaction of crack fronts with asperities is central to the criteria of fracture in heterogeneous materials and for predicting fracture surface formation. It is known how dyn…
Dynamics of active liquid interfaces
Raymond Adkins, Itamar Kolvin, Zhihong You +3
Controlling interfaces of phase separating fluid mixtures is key to creating diverse functional soft materials. Traditionally, this is accomplished with surface-modifying chemical…
Topological structure and dynamics of three dimensional active nematics
Guillaume Duclos, Raymond Adkins, Debarghya Banerjee +13
Point-like motile topological defects control the universal dynamics of diverse two-dimensional active nematics ranging from shaken granular rods to cellular monolayers. A comparab…
How super-tough gels break
Itamar Kolvin, John M. Kolinski, Jian Ping Gong +1
Fracture of highly stretched materials challenges our view of how things break. We directly visualize rupture of tough double-network (DN) gels at >50\% strain. During fracture, cr…
Nonlinear focusing in dynamic crack fronts and the micro-branching transition
Itamar Kolvin, Jay Fineberg, Mokhtar Adda-Bedia
Cracks in brittle materials produce two types of generic surface structures: facets at low velocities and micro-branches at higher ones. Here we observe a transition from faceting…
Topological defects govern crack front motion and facet formation on broken surfaces
Itamar Kolvin, Gil Cohen, Jay Fineberg
Patterns on broken surfaces are well-known from everyday experience, but surprisingly, how and why they form are very much open questions. Well-defined facets are commonly observed…
Crack front dynamics: the interplay of singular geometry and crack instabilities
Itamar Kolvin, Gil Cohen, Jay Fineberg
When fast cracks become unstable to microscopic branching (micro-branching), fracture no longer occurs in an effective 2D medium. We follow in-plane crack front dynamics via real-t…
A simple nonlinear equation for structural relaxation in glasses
Itamar Kolvin, Eran Bouchbinder
A wide range of glassy and disordered materials exhibit complex, non-exponential, structural relaxation (aging). We propose a simple nonlinear rate equation dδ/dt = a [1-exp (bδ)],…
Navier-Stokes hydrodynamics of thermal collapse in a freely cooling granular gas
Itamar Kolvin, Eli Livne, Baruch Meerson
We employ Navier-Stokes granular hydrodynamics to investigate the long-time behavior of clustering instability in a freely cooling dilute granular gas in two dimensions. We find th…
Experimental Study of Energy Transfer by Inertial Waves During the Build up of Turbulence in a Rotating System
Itamar Kolvin, Kobi Cohen, Yuval Vardi +1
We study the transition from fluid at rest to turbulence in a rotating water cylinder. We show that the energy, injected at a given height, is transported by inertial wave packets…