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All Outputs (11)

Torque about electrostatically charged spheres makes them more attractive (2024)
Journal Article
Swift, M. R., & Smith, M. I. (2024). Torque about electrostatically charged spheres makes them more attractive. Soft Matter, 20(35), 7038-7043. https://doi.org/10.1039/d4sm00566j

The strength of interparticle interactions in a granular system controls how a collection of insulating particles flow, cohere and fragment. Forces due to electrostatic charging, particularly in free-fall or low gravity environments, can dominate the... Read More about Torque about electrostatically charged spheres makes them more attractive.

Studying the aging of Laponite suspensions using extensional rheology (2022)
Journal Article
Hayes, M. J., & Smith, M. I. (2022). Studying the aging of Laponite suspensions using extensional rheology. European Physical Journal E, 45(11), Article 91. https://doi.org/10.1140/epje/s10189-022-00244-9

The effect of aging on the break-up dynamics of Laponite suspensions was studied in an extensional geometry. It was found that samples of increased age undergo stronger necking at the midpoint. The thinning of samples, driven purely by motion of the... Read More about Studying the aging of Laponite suspensions using extensional rheology.

Collective behavior of composite active particles (2022)
Journal Article
Eglinton, J., Smith, M. I., & Swift, M. R. (2022). Collective behavior of composite active particles. Physical Review E, 105(4), Article 044609. https://doi.org/10.1103/PhysRevE.105.044609

We describe simulations of active Brownian particles carried out to explore how dynamics and clustering are influenced by particle shape. Our particles are composed of four disks, held together by springs, whose relative size can be varied. These com... Read More about Collective behavior of composite active particles.

Topographic Control of Order in Quasi-2D Granular Phase Transitions (2021)
Journal Article
Downs, J. G., Smith, N. D., Mandadapu, K. K., Garrahan, J. P., & Smith, M. I. (2021). Topographic Control of Order in Quasi-2D Granular Phase Transitions. Physical Review Letters, 127(26), Article 268002. https://doi.org/10.1103/PhysRevLett.127.268002

We experimentally investigate the nature of 2D phase transitions in a quasi-2D granular fluid. Using a surface decorated with periodically spaced dimples we observe interfacial tension between coexisting granular liquid and crystal phases. Measuremen... Read More about Topographic Control of Order in Quasi-2D Granular Phase Transitions.

ParticleTracker: a gui based particle tracking software (2021)
Journal Article
Smith, M. I., & Downs, J. G. (2021). ParticleTracker: a gui based particle tracking software. Journal of Open Source Software, 6(66), Article 3611. https://doi.org/10.21105/joss.03611

Tracking the motion of objects in a video is an important part of the analysis in a diverse range of subject disciplines (Meijering, 2012; Rahman, 2019; Rose, 2020). It enables one to automate the extraction of quantitative information about size, sh... Read More about ParticleTracker: a gui based particle tracking software.

Slip in adhesion tests of a Kaolin clay (2021)
Journal Article
Hayes, M. J., & Smith, M. I. (2021). Slip in adhesion tests of a Kaolin clay. European Physical Journal E, 44(8), Article 102. https://doi.org/10.1140/epje/s10189-021-00107-9

Adhesion tests were performed on concentrated suspensions of Kaolin clay. At low concentrations samples formed conical deposits on both the top and bottom plates with the central region narrowing to a filament before undergoing breakup. In contrast h... Read More about Slip in adhesion tests of a Kaolin clay.

Collision-enhanced friction of a bouncing ball on a rough vibrating surface (2021)
Journal Article
Smith, N. D., Swift, M. R., & Smith, M. I. (2021). Collision-enhanced friction of a bouncing ball on a rough vibrating surface. Scientific Reports, 11, Article 442. https://doi.org/10.1038/s41598-020-80067-w

We describe experiments and simulations to investigate the dynamics of a ball bouncing on a rough vibrating surface. Directly measuring the impulse due to each bounce we find that the frictional interaction with the surface is strongly enhanced near... Read More about Collision-enhanced friction of a bouncing ball on a rough vibrating surface.

Boundary effects in a quasi-two-dimensional driven granular fluid (2017)
Journal Article
Smith, N., & Smith, M. (2017). Boundary effects in a quasi-two-dimensional driven granular fluid. Physical Review E, 96(6), Article 062910. https://doi.org/10.1103/PhysRevE.96.062910

The effect of a confining boundary on the spatial variations in granular temperature of a driven quasi-2d layer of particles is investigated experimentally. The radial drop in the relative granular temperature ΔT/T, exhibits a maximum at intermediate... Read More about Boundary effects in a quasi-two-dimensional driven granular fluid.

Fracture of jammed colloidal suspensions (2015)
Journal Article
Smith, M. (2015). Fracture of jammed colloidal suspensions. Scientific Reports, 5, Article 14175. https://doi.org/10.1038/srep14175

Concentrated colloidal suspensions display dramatic rises in viscosity, leading to jamming and granulation, with increasing shear rate. It has been proposed that these effects result from inter particle friction, as lubrication forces are overcome. T... Read More about Fracture of jammed colloidal suspensions.

Mechanical vibrations of pendant liquid droplets (2015)
Journal Article
Temperton, R. H., Smith, M. I., & Sharp, J. S. (2015). Mechanical vibrations of pendant liquid droplets. European Physical Journal E, 38, Article 79. https://doi.org/10.1140/epje/i2015-15079-2

A simple optical deflection technique was used to monitor the vibrations of microlitre pendant droplets of deuterium oxide, formamide, and 1,1,2,2-tetrabromoethane. Droplets of different volumes of each liquid were suspended from the end of a microli... Read More about Mechanical vibrations of pendant liquid droplets.