Vikram Rathee
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View article: Structure of propagating high-stress fronts in a shear-thickening suspension
Structure of propagating high-stress fronts in a shear-thickening suspension Open
We report direct measurements of spatially resolved stress at the boundary of a shear-thickening cornstarch suspension revealing persistent regions of high local stress propagating in the flow direction at the speed of the top boundary. Th…
View article: A fast and efficient tool to study the rheology of dense suspensions
A fast and efficient tool to study the rheology of dense suspensions Open
A cutting-edge software that adopts an optimized searching algorithm is presented to tackle the Newton–Euler equations governing the dynamics of dense suspensions in Newtonian fluids. In particular, we propose an implementation of a fixed-…
View article: Shear-Induced Ordering of Nanopores and Instabilities in Concentrated Surfactant Mesh Phases
Shear-Induced Ordering of Nanopores and Instabilities in Concentrated Surfactant Mesh Phases Open
Mixed surfactant systems with strongly bound counterions show many interesting phases such as the random mesh phase consisting of a disordered array of defects (water-filled nanopores in the bilayers). The present study addresses the non-e…
View article: Shear thickening behavior in dense repulsive and attractive suspensions of hard spheres
Shear thickening behavior in dense repulsive and attractive suspensions of hard spheres Open
Simulated particle networks (different solid colors) in a strongly attractive suspension at low shear stress. The distribution of the typical cluster size in the transient regime is more fragmented, prompting the unstable behavior of the s…
View article: Dynamics and memory of boundary stresses in discontinuous shear thickening suspensions during oscillatory shear
Dynamics and memory of boundary stresses in discontinuous shear thickening suspensions during oscillatory shear Open
Pattern of boundary stresses at the peak positive shear rate on three consecutive cycles at the beginning (A), middle (B), and end (C) of a LAOS measurement at strain = 9 and frequency = 10 rad s−1. There are approximately 50 cycles betwee…
View article: Shear-induced ordering of nano-pores and instabilities insurfactant mesh phases
Shear-induced ordering of nano-pores and instabilities insurfactant mesh phases Open
Mixed surfactant systems show many interesting phases such as the random mesh phase con
sisting of a disordered array of defects (water-filled nano-pores in the bilayers). The present study
addresses the non-equilibrium phase transition o…
View article: Shear-induced ordering of nano-pores and instabilities in concentrated surfactant mesh phases
Shear-induced ordering of nano-pores and instabilities in concentrated surfactant mesh phases Open
Mixed surfactant systems with strongly bound counterions show many interesting phases such as the random mesh phase consisting of a disordered array of defects (water-filled nano-pores in the bilayers). The present study addresses the non-…
View article: Role of particle orientational order during shear thickening in suspensions of colloidal rods
Role of particle orientational order during shear thickening in suspensions of colloidal rods Open
Rheology of dense anisotropic colloidal suspensions often exhibits unsteady flow at constant imposed shear stress and/or shear rate. Using simultaneous high-resolution confocal microscopy and rheology, we find that the temporal behavior ar…
View article: Localized Stress Fluctuations Drive Shear Thickening in Dense Suspensions
Localized Stress Fluctuations Drive Shear Thickening in Dense Suspensions Open
The mechanical response of solid particles dispersed in a Newtonian fluid exhibits a wide range of nonlinear phenomena including a dramatic increase in the viscosity \cite{1-3} with increasing stress. If the volume fraction of the solid ph…