143 citations · 1k across the 42 of their papers we have counts for
43 papers
The Paper-Stack Trampoline: Acoustic Restitution in Layered Media
Manou Liesker, Colton Kawamura, Maria Kieft +2
A ball bouncing on a thicker cushion should bounce less. We show that this is not always so . Measuring the coefficient of restitution of a steel ball dropped on a stack of …
Proximity to Jamming Governs Acoustic Attenuation in Damped Packings
Colton Kawamura, Derek R. Olson, Anthony P. Austin +3
We use particle-based numerical simulations to address a longstanding question regarding the origins of the linear frequency dependence of attenuation in fluid-saturated granular m…
Ridged geometries induce axial flow vortices in Couette systems
Akankshya Majhi, Maria Raquel Serial, Lars Kool +2
A yield stress fluid has a critical stress above which the material starts to flow. Typically, the yield stress behaviour is captured in the Herschel-Bulkley (HB) model, which assu…
On the Slipperiness of Surfactants: Charge-Mediated Friction Control at the Molecular Scale
Kaili Xie, Julie Jagielka, Liang Peng +8
From soap-covered dishes to freshly cleaned floors, surfactants can make surfaces slippery; yet, the underlying mechanism remains poorly understood. Here, we identify the molecular…
The motion of intruders through soft solids
Tom Mullin, Tommaso Pettinari, Joshua A. Dijksman
We present the results of an experimental investigation into the motion of large buoyant rigid spheres rising through highly concentrated collections of hydrated hydrogel particles…
Strain dependent viscous response describes the mechanics of cohesionless soft granular materials
Chandan Shakya, Luca Placidi, Anil Misra +4
Granular materials are ubiquitous in nature and are used extensively in daily life and in industry. The modeling of these materials remains challenging; therefore, finding models w…
A temperature dependent framework to predict and control physical pellet quality in biomass extrusion
Richard T. Benders, Joshua A. Dijksman, Thomas M. M. Bastiaansen +3
Pellet manufacturing of biomass (food, feed, bioenergy) presses powders or particles into dense pellets with improved nutritional, calorific, and handling properties. This process…
Paste extrusion generates a surface lubrication layer
Richard T. Benders, Menno Thomas, Thomas M. M. Bastiaansen +6
Dense particle-fluid mixtures, or \emph{pastes}, are encountered in the production of various materials, including animal feed, human food, pharmaceuticals, and biomass for bioener…
Confinement controls the creep rate in soft granular packings
Joshua A. Dijksman, Tom Mullin
Flow in soft materials encompasses a wide range of viscous, plastic and elastic phenomena which provide challenges to modelling at the microscopic level. To create a controlled flo…
Viscoelastic material properties determine contact mechanics of hydrogel spheres
Chandan Shakya, Jasper van der Gucht, Joshua A. Dijksman
Granular materials are ubiquitous in nature and industry; their mechanical behavior has been of academic and engineering interest for centuries. One of the reasons for their rather…
Elongated particles discharged with a conveyor belt in a two-dimensional silo
Bo Fan, Iker Zuriguel, Joshua A. Dijksman +2
The flow of elliptical particles out of a 2-dimensional silo when extracted with a conveyor belt is analyzed experimentally. The conveyor belt - placed directly below the silo outl…
Pressure sensitivity in non-local flow behaviour of dense hydrogel particle suspensions
Zohreh Farmani, Nazanin Ghods, Harkirat Singh +5
Slowly sheared particulate media like sand and suspensions flow heterogeneously as they yield via shear bands, in which most strain accumulates. Understanding shear band localizati…
Quantitative coarse graining of laminar fluid flow penetration in rough boundaries
Akankshya Majhi, Lars Kool, Jasper van der Gucht +1
The interaction between a fluid and a wall is described with a certain boundary condition for the fluid velocity at the wall. To understand how fluids behave near a rough wall, the…
Magnetic Resonance Imaging study of sheared granular matter
Jing Wang, Zohreh Farmani, Joshua Dijksman +3
We introduce a Magnetic Resonance Imaging technique to study the geometry of shear zones of soft, low-frictional and hard, frictional granular materials and their mixtures. Hydroge…
Creep control in soft particle packings
Joshua A Dijksman, Tom Mullin
Granular packings display a wealth of mechanical features which are of widespread significance. One of these features is creep: the slow deformation under applied stress. Creep is…
Darcy-Reynolds forces during intrusion into granular-fluid beds
Joshua Strader, Neil Causley, Joshua A. Dijksman +1
We experimentally study intrusion into fluid-saturated granular beds by a free-falling sphere, varying particle size and fluid viscosity. We test our results against Darcy-Reynolds…
Non-local effects in the shear banding of a thixotropic yield stress fluid
Raquel Serial, Daniel Bonn, Thom Huppertz +4
We observe a novel type of shear banding in the rheology of thixotropic yield-stress fluids that is due to the coupling of both non-locality and thixotropy. The latter is known to…
Spatially correlated rotational dynamics reveals strain dependence in amorphous particle packings
Dong Wang, Nima Nejadsadeghi, Yan Li +3
Microstructural dynamics in amorphous particle packings is commonly probed by quantifying particle displacements. While rigidity in particle packings emerges when displacement of p…
Viscous-like forces control the impact response of shear-thickening dense suspensions
Marc-Andre Brassard, Neil Causley, Nasser Krizou +2
We experimentally and theoretically study impacts into dense cornstarch and water suspensions. We vary impact speed as well as intruder size, shape, and mass, and we characterize t…
Instabilities of a thin liquid film in a funnel
T. -S. Lin, J. A. Dijksman, L. Kondic
We explore flow of a completely wetting fluid in a funnel, with particular focus on contact line instabilities at the fluid front. While the flow in a funnel may be related to a nu…
Direct evidence of stress-induced chain proximity in a macromolecular complex
Steven van Kesteren, Tatiana Nikolaeva, Henk Van As +1
The mechanical properties of many supramolecular materials are often determined by non-covalent interactions that arise from an interplay between chemical composition and molecular…
Transparent Experiments: Releasing Data from Mechanical Tests on Three Dimensional Hydrogel Sphere Packings
Jonathan Barés, Nicolas Brodu, Hu Zheng +1
We describe here experiments on the mechanics of hydrogel particle packings from the Behringer lab, performed between 2012 and 2015. These experiments quantify the evolution of all…
Sheared Amorphous Packings Display Two Separate Particle Transport Mechanisms
Dong Wang, Joshua A. Dijksman, Jonathan Bares +2
Shearing granular materials induces non-affine displacements. Such non-affine displacements have been studied extensively, and are known to correlate with plasticity and other mech…
Enlightening force chains: a review of photoelasticimetry in granular matter
Aghil Abed Zadeh, Jonathan Barés, Theodore A. Brzinski +10
A photoelastic material will reveal its internal stresses when observed through polarizing filters. This eye-catching property has enlightened our understanding of granular materia…