Transport and Assembly of Magnetic Surface Rotors**

Tierno, Pietro; Snezhko, Alexey

doi:10.1002/cnma.202100139

Cited by 25 publications

(15 citation statements)

References 87 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This translation is a result of the frictional shear force produced between the particle’s flow field and the surface. Otherwise known as a transverse force, this type of force has implications on structure and transport in collective systems ( 38 – 41 ). In the case of our collective system, the particles rotate parallel to the stationary chamber surface and, therefore, produce this frictional shear force with other in-plane rotating particles.…”

Section: Resultsmentioning

confidence: 99%

Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals

Lobmeyer

Biswal

2022

Sci. Adv.

View full text Add to dashboard Cite

The complexity of shear-induced grain boundary dynamics has been historically difficult to view at the atomic scale. Meanwhile, two-dimensional (2D) colloidal crystals have gained prominence as model systems to easily explore grain boundary dynamics at single-particle resolution but have fallen short at exploring these dynamics under shear. Here, we demonstrate how an inherent interfacial shear in 2D colloidal crystals drives microstructural evolution. By assembling paramagnetic particles into polycrystalline sheets using a rotating magnetic field, we generate a particle circulation at the interface of particle-free voids. This circulation shears the crystalline bulk, operating as both a source and sink for grain boundaries. Furthermore, we show that the Read-Shockley theory for hard-condensed matter predicts the misorientation angle and energy of shear-induced low-angle grain boundaries based on their regular defect spacing. Model systems containing shear provide an ideal platform to elucidate shear-induced grain boundary dynamics for use in engineering improved/advanced materials.

show abstract

Section: Resultsmentioning

confidence: 99%

Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals

Lobmeyer

Biswal

2022

Sci. Adv.

View full text Add to dashboard Cite

show abstract

“…For more details on this 3D printing process, please refer to the Supplementary Material file. Consistent rotation of macroscopic particles can be achieved by means of other experimental methods such as imposing external electromagnetic fields [29,30] or by means of shape anisotropy in the particles [31].…”

Section: Experimental Set-up and Particle Trackingmentioning

confidence: 99%

Chiral flow in a binary mixture of two-dimensional active disks

2022

View full text Add to dashboard Cite

In this article, we, experimentally, studied the dynamics of a binary mixture of air-fluidized disks. The disks are chiral since they incorporate a set of blades with constant tilt. Both species are identical except for their blade tilt angle, which is rotated by 180° in the second species. We analyzed the phase behavior of the system. Our analysis reveals a wide range of different fluid dynamics, including chiral flow. This chiral flow features in its base state a large vortex. We reported, for certain ranges of relative particle density of each species, inversion of the vorticity of this vortex. We discussed the possible mechanisms behind these chiral flow transitions.

show abstract

“…For more details on this 3D printing process, please refer to the Supplementary Material file. Consistent rotation of macroscopic particles can be achieved by means of other experimental methods such as imposing external electromagnetic fields [25,26] or by means of a shape anisotropy in the particles [27].…”

Section: Experimental Set-up and Particle Trackingmentioning

confidence: 99%

Chiral flow in a binary mixture of two-dimensional active disks

López-Castaño,

Rodríguez-Rivas,

Reyes

2022

Preprint

View full text Add to dashboard Cite

We study, experimentally, the dynamics of a binary mixture of air-fluidized disks. The disks are chiral since they incorporate a set of blades with constant tilt. Both species are identical except for their blades tilt angle, which is rotated by 180 o in the second species. We analyze the phase behavior of the system. Our analysis reveals a wide range of different fluid dynamics, including chiral flow. This chiral flow features in its base state a large vortex. We report, for certain ranges of relative particle density of each species, inversion of the vorticity of this vortex. We discuss on the possible mechanisms behind these chiral flow transitions.

show abstract

Transport and Assembly of Magnetic Surface Rotors**

Cited by 25 publications

References 87 publications

Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals

Grain boundary dynamics driven by magnetically induced circulation at the void interface of 2D colloidal crystals

Chiral flow in a binary mixture of two-dimensional active disks

Chiral flow in a binary mixture of two-dimensional active disks

Contact Info

Product

Resources

About