250 citations · 1k across the 37 of their papers we have counts for
40 papers
Spreading and absorption of silicone oil droplets on silicone elastomer films
Lauren Dutcher, Benjamin Baylis, John R. Dutcher +2
When a liquid droplet completely wets a hard substrate, its spreading dynamics follow Tanner's law, with the droplet radius growing as the one-tenth power of time. Here, we investi…
Compression and fracture of ordered and disordered droplet rafts
Pablo Eduardo Illing, Jean-Christophe Ono-dit-Biot, Kari Dalnoki-Veress +1
We simulate a two-dimensional array of droplets being compressed between two walls. The droplets are adhesive due to an attractive depletion force. As one wall moves toward the oth…
Spreading of a 2D granular analogue of a liquid puddle: predicting the structure and dynamics through a continuum model
Johnathan Hoggarth, Jean-Christophe Ono-dit-Biot, Kari Dalnoki-Veress
When sand flows out of a funnel onto a surface, a three dimensional pile that is stabilized by friction grows taller as it spreads. Here we investigate an idealized two dimensional…
Wettability alteration in thiolene-based polymer microfluidics: surface characterization and advanced fabrication techniques
Mahtab Masouminia, Kari Dalnoki-Veress, Benzhong Zhao
Wettability plays a significant role in controlling multiphase flow in porous media for many industrial applications, including geologic carbon dioxide sequestration, enhanced oil…
Multiple droplets on a conical fiber: formation, motion, and droplet mergers
Carmen L. Lee, Tak Shing Chan, Andreas Carlson +1
Small droplets on slender conical fibers spontaneously move along the fiber due to capillary action. The droplet motion depends on the geometry of the cone, the surface wettability…
Writhing and hockling instabilities in twisted elastic fibers
Adam Fortais, Elsie Loukiantchenko, Kari Dalnoki-Veress
The buckling and twisting of slender, elastic fibers is a deep and well-studied field. A slender elastic rod that is twisted with respect to a fixed end will spontaneously form a l…
Film coating by directional droplet spreading on fibers
Tak Shing Chan, Carmen L. Lee, Christian Pedersen +2
Plants and insects use slender conical structures to transport and collect small droplets, which are propelled along the conical structures due to capillary action. These droplets…
Droplet Migration on Conical Fibers
Clementine Fournier, Carmen Lee, Rafael Schulman +2
The spontaneous migration of droplets on conical fibers is studied experimentally by depositing silicone oil droplets onto conical glass fibers. Their motion is recorded using opti…
Mechanical properties of model colloidal mono-crystals
Jean-Christophe Ono-Dit-Biot, Pierre Soulard, Solomon Barkley +4
We investigate the elastic and yielding properties of two dimensional defect-free mono-crystals made of highly monodisperse droplets. Crystals are compressed between two parallel b…
Capillary Levelling of Immiscible Bilayer Films
Vincent Bertin, Carmen Lee, Thomas Salez +2
Flow in thin films is highly dependent on the boundary conditions. Here, we study the capillary levelling of thin bilayer films composed of two immiscible liquids. Specifically, a…
The emergence of local wrinkling or global buckling in thin freestanding bilayer films
John F. Niven, Gurkaran Chowdhry, James S. Sharp +1
Periodic wrinkling of a rigid capping layer on a deformable substrate provides a useful method for templating surface topography for a variety of novel applications. Many experimen…
Symmetrization of Thin Free-Standing Liquid Films via Capillary-Driven Flow
Vincent Bertin, John Niven, Howard A. Stone +3
We present experiments to study the relaxation of a nano-scale cylindrical perturbation at one of the two interfaces of a thin viscous free-standing polymeric film. Driven by capil…
Rearrangement of 2D aggregates of droplets under compression: signatures of the energy landscape from crystal to glass
Jean-Christophe Ono-dit-Biot, Pierre Soulard, Solomon Barkley +4
We study signatures of the energy landscape's evolution through the crystal-to-glass transition by compressing 2D finite aggregates of oil droplets. Droplets of two distinct sizes…
Asymptotic regimes in elastohydrodynamic and stochastic leveling on a viscous film
Christian Pedersen, John Niven, Thomas Salez +2
An elastic sheet that deforms near a solid substrate in a viscous fluid is a situation relevant to various dynamical processes in biology, geophysics and engineering. Here, we stud…
Droplets capped with an elastic film can be round, elliptical, or nearly square
Rafael D. Schulman, Kari Dalnoki-Veress
We present experiments which show that the partial wetting of droplets capped by taut elastic films is highly tunable. Adjusting the tension allows the contact angle and droplet mo…
Hydroelastic wake on a thin elastic sheet floating on water
Jean-Christophe Ono-dit-Biot, Miguel Trejo, Elsie Loukiantcheko +4
We investigate the hydroelastic wake created by a perturbation moving at constant speed along a thin elastic sheet floating at the surface of deep water. Using a high-resolution cr…
Adhesion-induced fingering instabilities in thin elastic films under strain
Benjamin Davis-Purcell, Pierre Soulard, Thomas Salez +2
In this study, thin elastic films supported on a rigid substrate are brought into contact with a spherical glass indenter. Upon contact, adhesive fingers emerge at the periphery of…
Liquid dewetting under a thin elastic film
Rafael D. Schulman, John F. Niven, Michiel A. Hack +2
We study the dewetting of liquid films capped by a thin elastomeric layer. When the tension in the elastomer is isotropic, circular holes grow at a rate which decreases with increa…
Surface energy of strained amorphous solids
Rafael D. Schulman, Miguel Trejo, Thomas Salez +2
Surface stress and surface energy are fundamental quantities which characterize the interface between two materials. Although these quantities are identical for interfaces involvin…
Adsorption-Induced Slip Inhibition for Polymer Melts on Ideal Substrates
Mark Ilton, Thomas Salez, Paul D. Fowler +7
Hydrodynamic slip of a liquid at a solid surface represents a fundamental phenomenon in fluid dynamics that governs liquid transport at small scales. For polymeric liquids, de Genn…
Liquid droplets on a free-standing glassy membrane: deformation through the glass transition
Adam Fortais, Rafael D. Schulman, Kari Dalnoki-Veress
In this study, micro-droplets are placed on thin, glassy, free-standing films where the Laplace pressure of the droplet deforms the free-standing film, creating a bulge. The film's…
Direct measurement of the critical pore size in a model membrane
Mark Ilton, Christian DiMaria, Kari Dalnoki-Veress
We study pore nucleation in a model membrane system, a freestanding polymer film. Nucleated pores smaller than a critical size close, while pores larger than the critical size grow…
Controlling Marangoni induced instabilities in spin-cast polymer films: how to prepare uniform films
Paul D. Fowler, Celine Ruscher, Joshua D. McGraw +2
In both research and industrial settings spin coating is extensively used to prepare highly uniform thin polymer films. However, under certain conditions, spin coating results in f…
Elastocapillary bending of microfibers around liquid droplets
Rafael D. Schulman, Amir Porat, Kathleen Charlesworth +4
We report on the elastocapillary deformation of flexible microfibers in contact with liquid droplets. A fiber is observed to bend more as the size of the contacting droplet is incr…