Rotational dynamics of individual particles in sheared granular materials is surprisingly “thermal” and indicative of mesoscopic mechanisms that underpin concepts such as shear jamming. Here we reanalyzed existing data set with the help of a very multidisciplinary team. Dong Wang, Nima Nejadsadeghi, Yan Li, Shashi Shekhar, Anil Misra, Joshua A. Dijksman — Soft Matter (2021)Continue reading “Rotational diffusion and rotational correlations in frictional amorphous disk packings under shear”
Author Archives: joshuadijksman
Molecular control over vitrimer-like mechanics – tuneable dynamic motifs based on the Hammett equation in polyimine materials
Chemistry is cool. WHo would have thought that changing a side group on a polymeric component can change the rheology of the whole network by adjusting the exchange rate kinetics? Sybren K. Schoustra, Joshua A. Dijksman, Han Zuilhof, Maarten M. J. Smulders — Chemical Science 12, 293–302 (2021) 10.1039/d0sc05458e
Mushroom-shaped adhesives stick!
Congratulations Preeti and Vittorio with getting the article out in Biointerphases. Thanks also to Vincent for contributing to this study through his MSc thesis work.
Anisotropic Stiffness Adhesives for High Shear Forces on Soft Substrates
Geometry affects mechanics, also in substrates. P. van Assenbergh, Frank Haring, Joshua A. Dijksman, Dimitra Dodou — Advanced Materials Interfaces 7 (2020) 10.1002/admi.202001173
Thermodynamics never gets old
Especially not with cocktail demos. The cola does get old though. The wipes make it a corona proof on-campus activity!
Sheared Amorphous Packings Display Two Separate Particle Transport Mechanisms
Diffusion is a tensor. And that matters. Dong Wang, Joshua A. Dijksman, Jonathan Barés, Jie Ren, Hu Zheng — Physical Review Letters 125 (2020) 10.1103/physrevlett.125.138001
Natural and induced surface roughness determine frictional regimes in hydrogel pairs
The name says it all. Hydrogels come with very different surface roughnesses, which gives them different frictional behavior.
Direct evidence of stress-induced chain proximity in a macromolecular complex
PEG/PAA mixtures display shear-induced gelation which can be traced back to chain proximity with NOESY techniques and most likely hydrogen bonding. Steven van Kesteren, Tatiana Nikolaeva, Henk Van As, Joshua A. Dijksman — Physical Review Materials 4 (2020) 10.1103/physrevmaterials.4.055603
Erratum: Obtaining self-similar scalings in focusing flows [Phys. Rev. E 92 , 043016 (2015)]
Sometimes authors make silly mistakes, and then these mistakes need to be corrected. Joshua A. Dijksman, Shomeek Mukhopadhyay, Cameron Gaebler, Thomas P. Witelski, Robert P. Behringer — Physical Review E 101 (2020) 10.1103/physreve.101.059902
Preparing corona-proof kitchen experiments on soft matter
Experiments developed for 5VWO students from the local high school Het Streek in Ede.
