10 citations · 24 across the 14 of their papers we have counts for
16 papers
Deformation-induced spectral softening drives phase separation on non-spherical membranes
Avraham Moriel, Howard A. Stone
Models of curvature-driven membrane sorting couple composition directly to membrane bending elasticity. Here we show that shape deformations can destabilize a homogeneous state wit…
The effects of surfactant solubility on inertial Marangoni flow: theory and numerics
Jun Eshima, Luc Deike, Howard A. Stone
Surface active agents (surfactants) are common contaminants found on most air-liquid interfaces. Surfactants lower the surface tension, and hence surfactant concentration gradients…
Expansion of a hole in a viscoelastic liquid sheet
Tachin Ruangkriengsin, Rodolfo Brandão, Howard A. Stone
Experiments on highly viscous polymeric films show that punctured holes expand exponentially in time, without sustained accumulation of liquid near the rim. This response departs f…
Understanding the Theory--Experiment Discrepancy in Pressure Drop of Dilute Polymer Solutions in Channel Flows
Nan Hu, Jonghyun Hwang, Evgeniy Boyko +1
For decades researchers have experimentally observed that the flow of dilute viscoelastic polymer solutions through contraction or contraction--expansion channels yields results at…
Nonlinear diffusion and compressive rims in source-driven biopolymer condensates
Avraham Moriel, Howard A. Stone
Many subcellular condensates continuously produce biopolymers. Coupling Flory-Huggins thermodynamics to two-fluid viscoelasticity, we probe the diffusion of such source-driven poly…
Polymer-polymer interdiffusion: effects of entanglements and a polymeric source
Avraham Moriel, Howard A. Stone
Many industrial applications and biological scenarios involve the interdiffusion of two polymeric species. Motivated by biological subcellular source-driven processes, we study pol…
Enucleated incompressible red blood cells in shear flow: theoretical analysis of shape instabilities
Avraham Moriel, Howard A. Stone, Simon Mendez
Red blood cells (RBCs) are essential for oxygen transport, and their remarkable ability to undergo significant deformations during flow is a crucial feature for their physiological…
Solubility enhanced surfactant-induced flow in air-liquid-air sheets
Jun Eshima, Tristan Aurégan, Emmanuel Villermaux +2
Liquid interfaces appear throughout nature and engineering and are typically contaminated by surface active agents (surfactants), which are characterized by a wide range of solubil…
Similarity Solutions of Shock Formation for First-order Strictly Hyperbolic Systems
Jun Eshima, Luc Deike, Howard A. Stone
Shocks due to hyperbolic partial differential equations (PDEs) appear throughout mathematics and science. The canonical example is shock formation in the inviscid Burgers' equation…
Design of model Boger fluids with systematically controlled viscoelastic properties
Jonghyun Hwang, Howard A. Stone
The subject of viscoelastic flow phenomena is crucial to many areas of engineering and the physical sciences. Although much of our understanding of viscoelastic flow features stems…
Retraction Dynamics of a Highly Viscous Liquid Sheet
Taosif Ahsan, Rodolfo Brandão, Benny Davidovitch +1
We study the one-dimensional capillary-driven retraction of a finite, planar liquid sheet in the asymptotic regime where both the Ohnesorge number and the initial len…
Revealing Actual Viscoelastic Relaxation Times in Capillary Breakup
Nan Hu, Jonghyun Hwang, Tachin Ruangkriengsin +1
We use experiments and theory to elucidate the size effect in capillary breakup rheometry, where pre-stretching in the visco-capillary stage causes the apparent relaxation time to…
Close-contact melting on hydrophobic textured surfaces: Confinement and meniscus effects
Nan Hu, Liwu Fan, Xiang Gao +1
We investigate the dynamics of close-contact melting (CCM) on gas-trapped hydrophobic surfaces, with specific focus on the effects of geometrical confinement and the liquid-air men…
Transient rod-climbing in an Oldroyd-B fluid
Tachin Ruangkriengsin, Rodolfo Brandão, Katie Wu +3
The Weissenberg effect, or rod-climbing phenomenon, occurs in non-Newtonian fluids where the fluid interface ascends along a rotating rod. Despite its prominence, theoretical insig…
Surface Furrowing Instability in Everting Soft Solids
Jonghyun Hwang, Mariana Altomare, Howard A. Stone
We report a surface instability observed during the extrusion of extremely soft elastic solids in confined geometries. Due to their unique rheological properties, these soft solids…
Viscoelastic fluid flow in a slowly varying planar contraction: the role of finite extensibility on the pressure drop
Bimalendu Mahapatra, Tachin Ruangkriengsin, Howard A. Stone +1
We analyze the steady viscoelastic fluid flow in slowly varying contracting channels of arbitrary shape and present a theory based on the lubrication approximation for calculating…