Zobrazeno 1 - 10
of 161
pro vyhledávání: '"Bandyopadhyay, Ranjini"'
Autor:
Parmar, Vaibhav Raj Singh, Chanda, Sayantan, Sivasubramaniam, Sri Vishnu Bharat, Bandyopadhyay, Ranjini
The adsorption of charged clay nanoplatelets plays an important role in stabilizing emulsions by forming a barrier around the emulsion droplets and preventing coalescence. In this work, the adsorption of charged clay nanoplatelets on a preformed Late
Externí odkaz:
http://arxiv.org/abs/2411.05717
Clay, the major ingredient of natural soils, is often used as a rheological modifier while formulating paints and coatings. When subjected to desiccation, colloidal clay suspensions and clayey soils crack due to the accumulation of drying-induced str
Externí odkaz:
http://arxiv.org/abs/2407.01396
The dynamics of dense particle packings near the jamming transition is characterized by correlated particle motion. The growth of dynamical heterogeneities, or strong spatial variations in the motion of the particles constituting the system, is a hal
Externí odkaz:
http://arxiv.org/abs/2401.10784
Publikováno v:
EPL, 145 (2024) 47001
The growth of interfacial instabilities during fluid displacements can be driven by gradients in pressure, viscosity and surface tension, and by applying external fields. Since displacements of non-Newtonian fluids such as polymer solutions, colloida
Externí odkaz:
http://arxiv.org/abs/2311.10391
Optical tweezers (OTs) can detect pico-Newton range forces operating on a colloidal particle trapped in a medium and have been successfully utilized to investigate complex systems with internal structures. Laponite clay particles in an aqueous medium
Externí odkaz:
http://arxiv.org/abs/2211.01034
We synthesize thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) colloidal microgel particles of different stiffnesses by controlling the concentration of crosslinker in a one-pot synthesis method. We employ oscillatory rheology and cryogenic scan
Externí odkaz:
http://arxiv.org/abs/2210.09694
When a soft glassy colloidal suspension is displaced by a Newtonian fluid in a radial Hele-Shaw geometry, the pattern morphology that develops at the interface is determined by the complex rheology of the former. We had reported in an earlier work [P
Externí odkaz:
http://arxiv.org/abs/2210.08948
Publikováno v:
Colloids and Surfaces A: Physicochemical and Engineering Aspects 662, 130926 (2023)
A highly sheared dense aqueous suspension of granular cornstarch particles displays rich nonlinear rheology. We had previously demonstrated the growth and onset of interfacial instabilities when shear-thinning cornstarch suspensions were displaced by
Externí odkaz:
http://arxiv.org/abs/2209.01614
Hypothesis: While the mechanical disruption of microscopic structures in complex fluids by large shear flows has been studied extensively, the effects of applied strains on the dielectric properties of macromolecular aggregates has received far less
Externí odkaz:
http://arxiv.org/abs/2206.09408
Publikováno v:
JCIS Open 6 (2022) 100047
Intricate fluid displacement patterns, arising from the unstable growth of interfacial perturbations, can be driven by fluid viscoelasticity and surface tension. A soft glassy suspension ages, $i.e.$ its mechanical moduli evolve with time, due to the
Externí odkaz:
http://arxiv.org/abs/2201.06088