189 citations · 297 across the 5 of their papers we have counts for
6 papers
Sliding or Rolling? Characterizing single-particle contacts
Simon Scherrer, Shivaprakash N. Ramakrishna, Vincent Niggel +4
Contacts between particles in dense, sheared suspensions are believed to underpin much of their rheology. Roughness and adhesion are known to constrain the relative motion of parti…
Effect of particle stiffness and surface properties on the nonlinear viscoelasticity of dense microgel suspensions
Jacopo Vialetto, Shivaprakash N. Ramakrishna, Lucio Isa +1
Particle surface chemistry and internal softness are two fundamental parameters in governing the mechanical properties of dense colloidal suspensions, dictating structure and flow,…
In-situ imaging of the three-dimensional shape of soft responsive particles at fluid interfaces by atomic force microscopy
Jacopo Vialetto, Shivaprakash N. Ramakrishna, Lucio Isa
The reconfiguration of soft, deformable particles upon adsorption at the interface between two fluids underpins many aspects of their dynamics and interactions, ultimately controll…
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…
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…