45 citations · 74 across the 10 of their papers we have counts for
11 papers
Defining Thixotropy
Yogesh M. Joshi, Ronald G. Larson
Originally coined 100 years ago to represent a shear-reversible sol-gel transition, the range of the term "thixotropy" has gradually expanded to encompass time-dependent changes in…
Analyzing the Gelation Transition through Fractional Viscoelasticity and the 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…
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…
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…
Nano-silica based Aqueous Colloidal Gels as Eco-friendly Thixotropic Lubricant
Arun Kumar, Vivek Kumar, Yogesh M. Joshi +1
The environmental risks posed by traditional oil and grease-based lubricants can be significantly mitigated by adopting water-based alternatives engineered with superior rheologica…
Shear Stress Build-up Under Constant Strain Conditions in Soft Glassy Materials
Vivek Kumar, Gareth H McKinley, Yogesh M Joshi
In this work, we investigate the transient rheological behavior of two soft glassy materials: a clay dispersion and a silica gel, emphasizing their unconventional shear stress buil…
Aqueous Laponite Dispersions are Attractive Gels, Not Repulsive Wigner Glasses: A Critical Commentary
Yogesh M Joshi, Shrajesh Patel, Khushboo Suman
An aqueous dispersion of Laponite has been studied in the literature for over the past three decades. Typically, the aqueous dispersion of Laponite undergoes incessant evolution of…
Ductile-to-brittle transition and yielding in soft amorphous materials: perspectives and open questions
Thibaut Divoux, Elisabeth Agoritsas, Stefano Aime +37
Soft amorphous materials are viscoelastic solids ubiquitously found around us, from clays and cementitious pastes to emulsions and physical gels encountered in food or biomedical e…