264 citations · 596 across the 7 of their papers we have counts for
6 papers · 1 filter
Molecular mechanisms of self-mated hydrogel friction
Jan Mees, Rok Simič, Thomas C. O'Connor +2
Self-mated hydrogel contacts show extremely small friction coefficients at low loads but a distinct velocity dependence. Here we combine mesoscopic simulations and experiments to t…
Disentangling the roles of roughness, friction and adhesion in discontinuous shear thickening by means of thermo-responsive particles
Chiao-Peng Hsu, Joydeb Mandal, Shivaprakash N. Ramakrishna +2
Dense suspensions of colloidal or granular particles can display pronounced non-Newtonian behaviour, such as discontinuous shear thickening (DST) and shear jamming (SJ). The essent…
Tuning Interparticle Hydrogen Bonding in Shear-Jamming Suspensions: Kinetic Effects and Consequences for Tribology and Rheology
Nicole M. James, Chiao-Peng Hsu, Nicholas D. Spencer +2
The shear-jamming of dense suspensions can be strongly affected by molecular-scale interactions between particles, e.g. by chemically controlling their propensity for hydrogen bond…
Roughness-dependent tribology effects on discontinuous shear thickening
Chiao-Peng Hsu, Shivaprakash N. Ramakrishna, Michele Zanini +2
Surface roughness affects many properties of colloids, from depletion [1] and capillary interactions [2], to their dispersibility [3] and use as emulsion stabilizers [4]. It also i…
Friction of rubber with surfaces patterned with rigid spherical asperities
D. T. Nguyen, S. Ramakrishna, C. Fretigny +3
This paper reports on the frictional properties of smooth rubber substrates sliding against rigid surfaces covered with various densities of colloidal nano-particles (average diame…
Microscopic mechanism for the shear-thickening of non-Brownian suspensions
Nicolas Fernandez, Roman Mani, David Rinaldi +7
We propose a simple model, supported by contact-dynamics simulations as well as rheology and friction measurements, that links the transition from continuous to discontinuous shear…