Developing a printed elastomeric wearable sensor with good conformity and proper adhesion to skin, coupled the capability of monitoring various physiological parameters, is very crucial for development point-of-care sensing devices high precision sensitivity. While there have been previous reports on fabrication multifunctional sensors, research printable adhesive not well explored. Herein, we report stencil fabricated in solvent-free condition, which demonstrated having contact skin its...

In this paper, the squeeze flow of an electrorheological (ER) fluid has been studied under a constant electric field and squeezing speed to understand link between extent structural arrest wall slip. The behavior during captured in terms normal force as function gap parametric variation intensity for four different compression speeds impact both these parameters on slip friction coefficient. Based growth rate with respect inter-plate gap, curves have divided into zones: elastic response,...

Abstract The quest for an ideal wound dressing material has been a strong motivation researchers to explore novel biomaterials this purpose. Such explorations have led the extensive use of silk fibroin (SF) as suitable polymer several applications over years. Unfortunately, another major protein—sericin not received its due attention yet in spite having favorable biological properties. In study, we report approach blending SF and sericin (SS) without usage chemical crosslinkers is made...

In this work we study the pure elongation flow behavior of an electrorheological (ER) fluid as a model soft-jammed system, wherein extent jamming is controlled by externally applied electric-field. More specifically, has been achieved facilitating significant slip at contact between material and rheometer-plate while pulling it with constant velocity under external The normal force exerted top plate on was measured function gap during for various combinations electric-field strength...

In this work, we study the deformation behavior of thin films various soft glassy materials that are simultaneously subjected to two creep flow fields, rotational shear by applying torque and elongational normal force. The generic under combined fields is investigated in different with diverse microstructure such as: hair gel, emulsion paint, shaving foam clay suspension. Increase strength one stress component while keeping other constant, not only leads an expected enhanced its own...

In polymeric liquids undergoing cross-linking reactions, rheological properties continuously change as a function of time. Consequently, the materials do not obey time translational invariance and therefore principles linear viscoelasticity. this work, we propose methodology in which viscoelasticity are transformed from real domain to effective domain. latter, readjustment material clock, accounts for dependency, facilitates validation invariance. By carrying out experiments on PDMS, show...

Owing to lack of time translational invariance, aging soft glassy materials do not obey fundamental principles linear viscoelasticity. We show that by transforming the viscoelastic framework from a real domain into an effective domain, wherein material clock is readjusted account for evolution relaxation time, invariance. Consequently, we demonstrate successful validation viscoelasticity (the Boltzmann superposition principle and convolution relation creep compliance stress modulus)...

In this work, we study the effect of deformation field on physical aging behavior an aqueous Carbopol dispersion. It is composed soft swollen particles gel that get deformed and acquire a polygonal shape, with flat interfaces rendering dispersion solid-like consistency as filled volume fraction approaches unity. has been proposed owing to release stored elastic energy in particles, undergoes microstructural evolution reminiscent glassy materials. We observe application moderate magnitude...

Abstract In recent years, the conventional methods of synthesizing nanomaterials have been surpassed by emergence microfluidics route, which has brought forth numerous advantages and transformed domain nanomaterial synthesis. However, synthesis semiconducting oxide nanomaterials, specifically Tin (SnO 2 ), remains a crucial area research due to its remarkable as viable alternative toxic costly materials. Additionally, SnO quantum dots (QDs) exhibit immense potential across diverse range...

In this work we study the creep flow behavior of a suspension polyaniline (PANI) particles in silicone oil under application an electric field. A PANI oil, model electrorheological (ER) fluid, shows increase elastic modulus and yield stress with magnitude Under field, greater field reduces strain induced material while shear at any enhances material. Remarkably, time evolution different stresses, strengths concentrations show superposition after appropriate shifting curves on axes. Observed...

In this work, we solve the Soft Glassy Rheology (SGR) model under application of oscillatory deformation field with varying magnitudes strain as well frequency for different noise temperatures. glassy domain, SGR undergoes time evolution elastic modulus. Increase in magnitude beyond linear regime is observed to enhance rate aging manifested by a faster modulus increase amplitude due overaging. However at higher magnitudes, rejuvenation effect starts dominating over aging, thereby reducing...

This study explores the physics of laminar planar hydraulic jump power-law liquids in a horizontal channel through shallow water analysis. The theory is supplemented and validated by numerical simulation performed phase-field method COMSOL Multiphysics. analysis applicable for shear thinning as well thickening reduces to Newtonian equations when flow behavior index (n) unity. analytical results are further with experimental data present study. steady state free surface profile conjunction...

Free-standing thin films of complex fluids can be investigated at controlled pressure conditions using a sandwich-type microfluidic chip design.

Physical properties of out equilibrium soft materials depend on time as well deformation history. In this work we propose to transform major shortcoming into gain by applying controlled field tailor the rheological properties. We take advantage fact that a certain magnitude can prevent particles in an aging glassy material from occupying energy wells up depth, thereby populating only deeper wells. employ two with dissimilar microstructures and demonstrate increase strength while leads...

We studied the aging dynamics of an aqueous suspension LAPONITE®, a model time dependent soft glassy material, using passive microrheology technique. This system is known to undergo physical during which its microstructure evolves progressively explore lower free energy states. Optical microscopy used monitor motion micron-sized tracer probes embedded in sample kept between two glass plates. The mean square displacements (MSD) obtained from particles show systematic change purely diffusive...

Draining from a closed-top tube occurs by downward displacement of liquid air. The air volume grows inside the as an axisymmetric bullet-shaped finger similar to Taylor bubble observed in gas–liquid slug flows, and drains annular film between wall. present study investigates draining shear-thinning vis-à-vis Newtonian liquids circular millichannels. Numerical simulations using phase-field method suggest that both power law Carreau models give close predictions behavior investigated domain,...

Yielding transition in isotropic soft materials under superposition of orthogonal deformation fields is known to follow von Mises criterion. However, anisotropic criterion fails owing preferred directions associated with the system. In this work we study a model yield stress system: electrorheological (ER) fluids that show structure formation direction electric field. We subject ER leads different values. obtain yielding state diagram by plotting normalized rotational shear against radial...

Slip over a solid surface is very common occurrence in industrial scale transport and the processing of complex fluids. The knowledge slip also plays huge role correct estimation rheological properties. In this work, we have studied dynamics model soft-glassy material that exhibits physical aging, wherein structure evolves gradually toward more solid-like character via rearrangement constituents. More precisely, investigated impact aging on associated with pure elongation flow material. We...