# Tunable shear thickening in suspensions

@article{Lin2016TunableST, title={Tunable shear thickening in suspensions}, author={Neil Y.C. Lin and Christopher Ness and Michael E. Cates and Jin Sun and Itai Cohen}, journal={Proceedings of the National Academy of Sciences}, year={2016}, volume={113}, pages={10774 - 10778} }

Significance When a concentrated suspension is strained, its viscosity can increase radically. This behavior, known as shear thickening, can be very useful to technological applications or highly problematic in industrial processes. Suspension flow properties are typically specified at the formulation stage, meaning that they are fixed in advance rather than controlled in situ during application. Here, we report a biaxial shear strategy eradicating the flow-induced structures responsible for…

## 60 Citations

### Shear thickening in concentrated suspensions of smooth spheres in Newtonian suspending fluids.

- BiologySoft matter
- 2018

An overview of the understanding of shear thickening and the methods that have been developed to describe it is provided, as well as outstanding questions.

### Revealing the frictional transition in shear-thickening suspensions

- PhysicsProceedings of the National Academy of Sciences
- 2017

These results provide direct evidence that the recent frictional transition scenario applies in real suspensions, and show that tuning the range of the repulsive force below the particle roughness suppresses the frictionless state and also the shear-thickening behavior of the suspension.

### Shaken and stirred: Random organization reduces viscosity and dissipation in granular suspensions

- EngineeringScience Advances
- 2018

Numerical simulations are presented that demonstrate a complementary approach whereby the viscosity divergence is shifted by driven flow tuning, using superimposed shear oscillations in various configurations to facilitate a primary flow.

### Exploring the roles of roughness, friction and adhesion in discontinuous shear thickening by means of thermo-responsive particles

- Materials ScienceNature communications
- 2021

Experimental evidence is reported that the relative contributions of friction, adhesion, and surface roughness can be tuned in situ as a function of temperature, allowing contact conditions to be regulated, and discontinuous shear thickening to be switched on and off on demand.

### Global topology of contact force networks: Insight into shear thickening suspensions.

- EngineeringPhysical review. E
- 2019

The topological metrics show that the network grows homogeneously at large scales but with many local regions devoid of contacts, indicating clearly the role of CFN growth in causing the large change in the rheological response at the shear thickening transition.

### Using Acoustic Perturbations to Dynamically Tune Shear Thickening in Colloidal Suspensions.

- PhysicsPhysical review letters
- 2019

Piezoelectric transducers are used to apply acoustic perturbations to dynamically tune the suspension viscosity in the shear-thickening regime to attribute the mechanism of dethickening to the disruption of shear -induced force chains via perturbation that are large relative to the particle roughness scale.

### Tuning the mechanical and flow properties of colloidal gels with ultrasound

- Materials Science
- 2019

Colloidal gels, where nanoscale particles aggregate into an elastic yet fragile network, are at the heart of materials that combine specific optical, electrical and mechanical properties. Tailoring…

### Flow-to-fracture transition and pattern formation in a discontinuous shear thickening fluid

- Geology
- 2020

Recent theoretical and experimental work suggests a frictionless-frictional transition with increasing inter-particle pressure explains the extreme solid-like response of discontinuous shear…

### Density waves in shear-thickening suspensions

- PhysicsScience Advances
- 2020

This work reveals how shear-thickening suspensions flow, shedding light onto as yet non-understood complex dynamics reported in the literature, and shows the existence of density fluctuations that appear as periodic waves moving in the direction of flow and breaking azimuthal symmetry.

### A hydrodynamic model for discontinuous shear-thickening in dense suspensions

- EngineeringJournal of Rheology
- 2020

Restricted sliding or rotational motion of colloidal particles plays a key role in the emergence of discontinuous shear thickening (DST). From viscometric functions to the number of contacting…

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