6 papers
Rigid spheres moving through soft solids
Tom Mullin, Tommaso Pettinari, Joshua A. Dijksman
We present the results of an experimental investigation into buoyant rigid spheres rising through highly concentrated collections of hydrated hydrogel particles. The volume fractio…
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…
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…
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…