35 citations · 74 across the 6 of their papers we have counts for
6 papers · 1 filter
Anomalous Scaling for Hydrodynamic Lubrication of Conformal Surfaces
James A. Richards, Patrick B. Warren, Daniel J. M. Hodgson +2
The hydrodynamic regime of the Stribeck curve giving the friction coefficient as a function of the dimensionless relative sliding speed (the Sommerfeld number, ) of two cont…
Gap-Dependent Hydrodynamic Lubrication in Conformal Contacts
James A. Richards, Patrick B. Warren, Wilson C. K. Poon
We show that the hydrodynamic lubrication of contacting conformal surfaces with a typical texture height gives rise to a universal behaviour in the Stribeck curve in which the fric…
Exploring particle dynamics in flowing complex fluids using differential dynamic microscopy
James A. Richards, Vincent A. Martinez, Jochen Arlt
Microscopic dynamics reveal the origin of the bulk rheological response in complex fluids. In model systems particle motion can be tracked, but for industrially relevant samples th…
Particle sizing for flowing colloidal suspensions using flow-differential dynamic microscopy
James A Richards, Vincent A Martinez, Jochen Arlt
Particle size is a key variable in understanding the behaviour of the particulate products that underpin much of our modern lives. Typically obtained from suspensions at rest, meas…
Contactless Interfacial Rheology: Probing Shear at Liquid-Liquid Interfaces without an Interfacial Geometry via Fluorescence Microscopy
Iain Muntz, James A. Richards, Sam Brown +3
Interfacial rheology is important for understanding properties such as Pickering emulsion or foam stability. Currently, the response is measured using a probe directly attached to…
Turning a yield-stress calcite suspension into a shear-thickening one by tuning inter-particle friction
James A. Richards, Rory E. O'Neill, Wilson C. K. Poon
We show that a suspension of non-Brownian calcite particles in glycerol-water mixtures can be tuned continuously from being a yield-stress suspension to a shear-thickening suspensi…