scholarly journals Tracer dynamics in crowded active-particle suspensions

Soft Matter ◽  
2021 ◽  
Author(s):  
Julian Reichert ◽  
Thomas Voigtmann
Keyword(s):  
Active Particle ◽  
Particle Interactions ◽  
Particle Suspensions ◽  
Diffusive Motion ◽  
Dense Suspensions

Active tracers in dense suspensions show diffusive, sub-diffusive, and super-diffusive motion signalling an interplay of self-propulsion and particle interactions.

Inelastic cross sections of nucleons and π mesons in carbon and lead near 100 GeV

1968 ◽  
Vol 46 (10) ◽  
pp. S694-S696 ◽  
Author(s):  
A. V. Alakoz ◽  
V. N. Bolotov ◽  
M. I. Devishev ◽  
L. F. Klimanova ◽  
A. P. Shmeleva
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Cosmic Ray ◽  
High Energy ◽  
Active Particle ◽  
Particle Interactions ◽  
Active Particles ◽  
The Cross

An experiment to measure the cross section for high-energy cosmic-ray neutrons and charged nuclear-active particle interactions with Pb and C nuclei has been carried out at an altitude of 2 000 m. Large spark chambers were used in a detector which selected neutrons and charged nuclear-active particles in the region of 100 GeV. The results are σπ(nPb) = (1.65 ± 0.17) barn, σπ(nC) = (0.204 ± 0.02) barn, σπ(πPb) = (1.53 ± 0.17) barn, σπ(πC) = (0.168 ± 0.017) barn.

scholarly journals Phase separation and rotor self-assembly in active particle suspensions

2012 ◽  
Vol 109 (11) ◽  
pp. 4052-4057 ◽  
Author(s):  
J. Schwarz-Linek ◽  
C. Valeriani ◽  
A. Cacciuto ◽  
M. E. Cates ◽  
D. Marenduzzo ◽  
...  
Keyword(s):  
Phase Separation ◽  
Self Assembly ◽  
Active Particle ◽  
Particle Suspensions

scholarly journals Irreversibility and chaos in active particle suspensions

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Sergio Chibbaro ◽  
Astrid Decoene ◽  
Sebastien Martin ◽  
Fabien Vergnet
Keyword(s):  
Active Particle ◽  
Particle Suspensions

Ponderomotive force near cyclotron resonance

1987 ◽  
Vol 38 (1) ◽  
pp. 43-51 ◽  
Author(s):  
M. Kono ◽  
H. Sanuki
Keyword(s):  
Vlasov Equation ◽  
Cyclotron Resonance ◽  
Ponderomotive Force ◽  
Magnetized Plasma ◽  
Significant Feature ◽  
Particle Interactions ◽  
Diffusive Motion ◽  
At Resonance ◽  
Singular Behaviour ◽  
Near Resonance

The ponderomotive force in a magnetized plasma is derived by carrying out the renormalization of wave–particle interactions based on the Vlasov equation. A significant feature of the resuit is non-singular behaviour at resonance even in the case of perpendicular propagation. This is shown to be related to the onset of the diffusive motion of particles due to the orbit instability near resonance, where the ponderomotive force is eventually small.

scholarly journals Rheology of Active-Particle Suspensions

2004 ◽  
Vol 92 (11) ◽  
Author(s):  
Yashodhan Hatwalne ◽  
Sriram Ramaswamy ◽  
Madan Rao ◽  
R. Aditi Simha
Keyword(s):  
Active Particle ◽  
Particle Suspensions

Unified theory for a sheared gas–solid suspension: from rapid granular suspension to its small-Stokes-number limit

2019 ◽  
Vol 870 ◽  
pp. 1175-1193 ◽  
Author(s):  
M. Alam ◽  
S. Saha ◽  
R. Gupta
Keyword(s):  
Transport Coefficients ◽  
Present Theory ◽  
Moment Equation ◽  
Stokes Number ◽  
Quantitative Agreement ◽  
Enskog Equation ◽  
Particle Interactions ◽  
Dense Suspensions ◽  
Normal Stress Differences ◽  
Drag Law

A non-perturbative nonlinear theory for moderately dense gas–solid suspensions is outlined within the framework of the Boltzmann–Enskog equation by extending the work of Saha & Alam (J. Fluid Mech., vol. 833, 2017, pp. 206–246). A linear Stokes’ drag law is adopted for gas–particle interactions, and the viscous dissipation due to hydrodynamic interactions is incorporated in the second-moment equation via a density-corrected Stokes number. For the homogeneous shear flow, the present theory provides a unified treatment of dilute to dense suspensions of highly inelastic particles, encompassing the high-Stokes-number rapid granular regime ($St\rightarrow \infty$) and its small-Stokes-number counterpart, with quantitative agreement for all transport coefficients. It is shown that the predictions of the shear viscosity and normal-stress differences based on existing theories deteriorate markedly with increasing density as well as with decreasing Stokes number and restitution coefficient.

scholarly journals Microfluidic rheology of active particle suspensions: Kinetic theory

2016 ◽  
Vol 10 (4) ◽  
pp. 043505 ◽  
Author(s):  
Roberto Alonso-Matilla ◽  
Barath Ezhilan ◽  
David Saintillan
Keyword(s):  
Kinetic Theory ◽  
Active Particle ◽  
Particle Suspensions
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