Search Results - "Bandyopadhyay, Ranjini"

Encapsulation of Hydrophobic Drugs in Pluronic F127 Micelles: Effects of Drug Hydrophobicity, Solution Temperature, and pH by Basak, Rajib, Bandyopadhyay, Ranjini

“…Three drugs, ibuprofen, aspirin, and erythromycin, are encapsulated in spherical Pluronic F127 micelles. The shapes and the size distributions of the micelles…”
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Aggregation and stability of anisotropic charged clay colloids in aqueous medium in the presence of salt by Ali, Samim, Bandyopadhyay, Ranjini

“…Na-montmorillonite nanoclay is a colloid of layered mineral silicate. When dispersed in water, this mineral swells on absorption of water and exfoliates into…”
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Study of dynamical heterogeneities in colloidal nanoclay suspensions approaching dynamical arrest by Gadige, Paramesh, Saha, Debasish, Behera, Sanjay Kumar, Bandyopadhyay, Ranjini

“…The dynamics of aqueous Laponite clay suspensions slow down with increasing sample waiting time ( t w ). This behavior, and the material fragility that…”
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Growth kinetics of interfacial patterns formed by the radial displacement of an aging viscoelastic suspension by Palak, Parmar, Vaibhav Raj Singh, Bandyopadhyay, Ranjini

“…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…”
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Pattern selection in radial displacements of a confined aging viscoelastic fluid by Palak, Parmar, Vaibhav Raj Singh, Saha, Debasish, Bandyopadhyay, Ranjini

“…Intricate fluid displacement patterns, arising from the unstable growth of interfacial perturbations, can be driven by fluid viscoelasticity and surface…”
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Observation of chaotic dynamics in dilute sheared aqueous solutions of CTAT by Bandyopadhyay, R, Basappa, G, Sood, A K

“…The nonlinear flow behavior of a viscoelastic gel formed due to entangled, cylindrical micelles in aqueous solutions of the surfactant cetyl trimethylammonium…”
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Enhanced elasticity and soft glassy rheology of a smectic in a random porous environment by BANDYOPADHYAY, Ranjini, LIANG, Dennis, COLBY, Ralph H, HARDEN, James L, LEHENY, Robert L

“…We report studies of the frequency-dependent shear modulus, G(*)(omega) = G(')(omega) + iG('')(omega), of the liquid crystal octylcyanobiphenyl (8CB) confined…”
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Evaluation of the exfoliation and stability of Na-montmorillonite in aqueous dispersions by Ali, Samim, Bandyopadhyay, Ranjini

“…In aqueous dispersion, Na-montmorillonite swells due to absorption of water and exfoliate into smaller entities, known as tactoids, with electric double layers…”
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Use of Ultrasound Attenuation Spectroscopy to Determine the Size Distribution of Clay Tactoids in Aqueous Suspensions by Ali, Samim, Bandyopadhyay, Ranjini

“…The dispersion processes of aqueous samples of clay are studied using ultrasound attenuation spectroscopy. The attenuation spectra that are acquired in the…”
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Correlating the drying kinetics and dried morphologies of aqueous colloidal gold droplets of different particle concentrations by Zaibudeen, A.W., Bandyopadhyay, Ranjini

“…The evaporation of a gold nanorod (Au-NR) dispersion droplet, containing residual surfactant, on a hydrophilic silicon substrate results in a coffee stain with…”
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Dichotomous behaviors of stress and dielectric relaxations in dense suspensions of swollen thermoreversible hydrogel microparticles by Misra, Chandeshwar, Gadige, Paramesh, Bandyopadhyay, Ranjini

“…[Display omitted] While the mechanical disruption of microscopic structures in complex fluids by large shear flows has been studied extensively, the effects of…”
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Formation and rupture of Ca(2+) induced pectin biopolymer gels by Basak, Rajib, Bandyopadhyay, Ranjini

“…When calcium salts are added to an aqueous solution of polysaccharide pectin, ionic cross-links form between pectin chains, giving rise to a gel network in…”
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Scaling behavior in the convection-driven Brazil nut effect by Hejmady, Prakhyat, Bandyopadhyay, Ranjini, Sabhapandit, Sanjib, Dhar, Abhishek

“…The Brazil nut effect is the phenomenon in which a large intruder particle immersed in a vertically shaken bed of smaller particles rises to the top, even when…”
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Formation and development of distinct deposit patterns by drying Polyelectrolyte-stabilized colloidal droplets at different surfactant concentrations by Zaibudeen, A.W., Bandyopadhyay, Ranjini

“…Schematic representation of a PSS stabilized gold nanorod dispersion droplet with residual PSS cast on a piranha treated silicon substrate (Left) and the…”
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Interfacial instabilities in confined displacements involving non-Newtonian fluids by Parmar, Vaibhav Raj Singh, Bandyopadhyay, Ranjini

“…Abstract The growth of interfacial instabilities during fluid displacements can be driven by gradients in pressure, viscosity and surface tension, and by…”
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Emergence of transient reverse fingers during radial displacement of a shear-thickening fluid by Palak, Parmar, Vaibhav Raj Singh, Chanda, Sayantan, Bandyopadhyay, Ranjini

“…A highly sheared dense aqueous suspension of granular cornstarch particles displays rich nonlinear rheology. We had previously demonstrated the growth and…”
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Emergent patterns and stable interfaces during radial displacement of a viscoelastic fluid by Palak, Sathyanath, Rahul, Kalpathy, Sreeram K., Bandyopadhyay, Ranjini

“…The displacement of a more viscous fluid by a less viscous fluid renders the fluid-fluid interface unstable and leads to intricate patterns called viscous…”
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Influence of particle size on the thermoresponsive and rheological properties of aqueous poly(N-isopropylacrylamide) colloidal suspensions by Misra, Chandeshwar, Behera, Sanjay Kumar, Bandyopadhyay, Ranjini

“…Thermoresponsive poly( N -isopropylacrylamide) (PNIPAM) particles of different sizes are synthesized by varying the concentration of sodium dodecyl sulphate…”
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Dynamic Light Scattering Study and DLVO Analysis of Physicochemical Interactions in Colloidal Suspensions of Charged Disks by Saha, Debasish, Bandyopadhyay, Ranjini, Joshi, Yogesh M

“…The interparticle interactions in colloidal suspensions of charged disks of Laponite clay in water were investigated using dynamic light scattering (DLS) and…”
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Novel experimentally observed phenomena in soft matter by BANDYOPADHYAY, RANJINI

“…Soft materials such as colloidal suspensions, polymer solutions and liquid crystals are constituted by mesoscopic entities held together by weak forces. Their…”
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