Shear Thinning
Shear Thinning - Related Videos
10:28
Experimental Measurement of Settling Velocity of Spherical Particles in Unconfined and Confined Surfactant-based Shear Thinning Viscoelastic Fluids
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Cited by 15 •
2014
This paper demonstrates the experimental procedure to measure terminal settling velocities of spherical particles in surfactant-based shear thinning viscoelastic fluids. Fluids over a wide range of rheological properties are prepared and settling velocities are measured for a range of particle sizes in unbounded fluids and fluids between parallel walls.
11:12
Chronic Imaging of Mouse Visual Cortex Using a Thinned-skull Preparation
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Cited by 20 •
2010
In this video and supplemental material, we show a protocol for chronic in vivo imaging of the intact brain using a thinned-skull preparation.
09:53
Two-Photon in vivo Imaging of Dendritic Spines in the Mouse Cortex Using a Thinned-skull Preparation
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Cited by 19 •
2014
Time-lapse imaging in the living animal provides valuable information on structural reorganization in the intact brain. Here, we introduce a thinned-skull preparation that allows transcranial imaging of fluorescently labeled synaptic structures in the living mouse cortex by two-photon microscopy.
04:53
A Novel Capsulorhexis Technique Using Shearing Forces with Cystotome
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Cited by 5 •
2010
This video demonstrates a novel capsulorhexis technique in modern cataract surgery. Capsulorhexis is the most difficult and important part of phacoemulsification surgery.
09:49
A Polished and Reinforced Thinned-skull Window for Long-term Imaging of the Mouse Brain
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Cited by 128 •
2012
We present a method to form an imaging window in the mouse skull that spans millimeters and is stable for months without inflammation of the brain. This method is well suited for longitudinal studies of blood flow, cellular dynamics, and cell/vascular structure using two-photon microscopy.
FAQs
Higher shear can align and disentangle polymer chains, reducing their internal resistance to flow. In materials built from particles, the same increase in deformation can disrupt particle networks that otherwise contribute to resistance. These mechanisms explain why the processing response depends on whether the fluid is dominated by polymer structure or a particle network.
Both mechanisms lower resistance during faster deformation, but they act on different structures. Particle-based materials respond when flow disrupts networks formed among particles, whereas polymer-containing fluids respond when chains align and disentangle. This distinction helps engineers relate a material’s composition and internal organization to its observed flow behavior.
Shear rate describes how rapidly a material deforms, and increasing it can reduce the material’s apparent viscosity. As a result, a fluid may offer greater resistance during slower deformation but become easier to move during faster processing. Accounting for this response helps engineers anticipate transport and processing behavior rather than treating viscosity as constant.
Engineers characterize the behavior with flow curves that show how apparent viscosity changes as shear rate varies. They can then apply models such as the power-law relationship to represent that response and support predictions of transport and processing performance. This approach connects measured flow behavior with decisions about handling and equipment operation.
The power-law relationship provides a model for the connection between shear rate and the changing apparent viscosity of a shear-thinning material. By using flow-curve information, engineers can represent the material’s response in a form useful for predicting transport and processing performance. Its value is therefore practical: it links characterization data to engineering expectations.
The behavior is relevant to polymer solutions, paints, inks, cement slurries, and biological formulations. In these systems, reduced resistance during faster deformation can support pumping, spreading, or other processing steps. At the same time, the material can remain more stable when it is not being actively deformed, making the behavior useful for both handling and product performance.