8 papers
Analysing gelation transition through fractional viscoelasticity and Mittag-Leffler-Prabhakar function
Yogesh M Joshi
The gelation transition, a process that transforms a flowable liquid into an elastic solid, occurs in a variety of systems, ranging from colloidal to polymeric. During the gelation…
Nano-Clay-Stabilized Water-in-Oil Colloidal Pickering Emulsions as Thixotropic Lubricant
Arun Kumar, Rahul Yadav, Yogesh M. Joshi +1
The limitations of conventional mineral oil-based lubricants motivate the development of environmentally benign emulsions capable of providing lubrication and heat dissipation in d…
Evolution of Linear Viscoelasticity across the Critical Gelation Transition
Yogesh M Joshi
In this work, we develop a rigorous theoretical framework for the evolution of linear viscoelastic properties across the sol-gel transition. More specifically, we derive general ad…
Thermal History Asymmetry and Dissipation in Dense Colloidal Microgel Glasses
Sonali Vasant Kawale, Yogesh M Joshi, Ranjini Bandyopadhyay
Microstructurally arrested matter, from molecular glasses to soft glassy materials, can retain a memory of their thermal or mechanical (shear) histories. Their history-dependent an…
Rheological Behavior of Colloidal Silica Dispersion: Irreversible Aging and Thixotropy
Vivek Kumar, Yogesh M. Joshi
In this work, we study the rheological behavior of colloidal dispersion of charge-screened nanoparticles of silica suspended in aqueous media that exhibits soft solid-like consiste…
Plastic or Viscous? A Reappraisal of Yielding in Soft Matter
Yogesh M. Joshi, Alexander Ya. Malkin
Many soft jammed materials, such as pastes, gels, concentrated emulsions, and suspensions, possess a threshold stress, known as yield stress, that must be exceeded to cause permane…