Journal ArticleDOI
Determination of the flow curve of complex fluids using the Rabinowitsch–Mooney equation in sensorless microrheometer
Pierre Guillot,Annie Colin +1 more
TLDR
This work presents a way to make rheological measurements on a microfluidic chip using a parallel flow between a reference fluid and a studied fluid to measure the pressure drop inside the channel.Abstract:
In this work, we present a way to make rheological measurements on a microfluidic chip. The originality of our approach relies on the determination of the flow curve of a fluid using the Rabinowitsch–Mooney equation. For this purpose, we use a parallel flow between a reference fluid and a studied fluid to measure the pressure drop inside the channel. Using a Newtonian fluid of known viscosity, knowing the flow rates of the two liquids and measuring the geometrical features of the two-phase flow allows determining the pressure drop in the channel. The Rabinowitsch–Mooney equation is used to calculate the local shear rate and shear stress at the wall for the studied sample. We validate our method for several complex fluids.read more
Citations
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Journal ArticleDOI
Biophysical characterization of organelle-based RNA/protein liquid phases using microfluidics.
Nicole Taylor,Shana Elbaum-Garfinkle,Nilesh Vaidya,Huaiying Zhang,Howard A. Stone,Clifford P. Brangwynne +5 more
TL;DR: A microfluidic platform is introduced that drives protein droplets into a single large phase, which facilitates viscosity measurements using passive microrheology and/or active two-phase flow analysis, which enables studying the impact of ATP-dependent biological activity on RNP droplets, which is a key area for future research.
Journal ArticleDOI
A stress-controlled microfluidic shear viscometer based on smartphone imaging
TL;DR: In this article, a stress-controlled microfluidic shear viscometer with flow visualization aided by smartphone technology is presented, which can measure the viscosity of Newtonian and polymeric fluids over a broad range of shear rates.
Journal ArticleDOI
In vitro and ex vivo measurement of the biophysical properties of blood using microfluidic platforms and animal models
Yang Jun Kang,Sang Joon Lee +1 more
TL;DR: Several techniques for measuring haemorheological properties, such as blood viscosity, RBC deformability and RBC aggregation, using in vitro microfluidic platforms are summarized.
Journal ArticleDOI
Flow of complex suspensionsa)
TL;DR: In this paper, the authors describe how one can make use of novel micro-fabrication techniques and microfluidic rheometers to determine their flow properties under well controlled experimental conditions.
Proceedings ArticleDOI
Monitoring Thermal and Mechanical Stability of Enhanced Oil Recovery (EOR) Acrylamide Based Polymers (PAM) Through Intrinsic Viscosity (IV) Determination Using a New Capillary Rheology Technique
Laurent Rodriguez,Aurora Mejia,Stéphanie Reynaud,Gaëtane Lespes,Cédrick Favero,S. Antignard,Bruno Giovannetti,N. Gaillard,Guillaume Dupuis,M. Loriau,Stephane Jouenne,Bruno Grassl +11 more
TL;DR: In this article, a new and efficient capillary rheology technique is presented allowing measuring the bulk solution rheological and intrinsic viscosity of polymers in various brines even at high temperature (140° C) and at a controlled and low shear rate.
References
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Book
Rheology: Principles, Measurements, and Applications
TL;DR: This text tackles the tensor in such a way as to make the problems accessible and understandable - by simplifying notation and making the three-dimensional approach to rheology practical.
Journal ArticleDOI
End Corrections in the Capillary Flow of Polyethylene
TL;DR: In this article, the end correction term of polyethylene was determined as a function of the shear rate of the extruded filament, and it was shown that at high shear rates there is an abrupt decrease in dn/d log Gn.
Journal ArticleDOI
Formation of Nano-emulsions by Low-Energy Emulsification Methods at Constant Temperature
TL;DR: In this paper, the formation of nano-emulsions was studied in the system water/Brij 30/decane at 25 °C by three low-energy emulsification methods: stepwise addition of oil to a water−surfactant mixture, stepwise adding water to a solution of the surfactant in oil, and mixing all the components in the final composition.
Journal ArticleDOI
Nanofluidic devices and their applications.
TL;DR: The current state of the art of nanofluidic fabrication is presented and the key transport phenomena in nanochannels are discussed, which allows smarter design resulting, among others, in new separation principles by taking advantage of the anisotropy.
Journal ArticleDOI
Reexamination of Hagen-Poiseuille flow: Shape dependence of the hydraulic resistance in microchannels
TL;DR: This work considers pressure-driven, steady-state Poiseuille flow in straight channels with various cross-sectional shapes and finds that alpha depends linearly on C, which points out C as a single dimensionless measure characterizing flow properties as well as the strength and effectiveness of surface-related phenomena central to lab-on-a-chip applications.