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The stopping power and energy loss rate of charged particles traversing a two-dimensional Dirac plasma is investigated. The Dirac plasma considered here models a solid state system, recently realized graphene monolayer, where the conduction…

Mesoscale and Nanoscale Physics · Physics 2008-08-26 Aqsa Arshad , Kashif Sabeeh , M. Tahir

We numerically investigate normal diffusion in a two-dimensional athermal suspension of active particles undergoing motility-induced phase separation. The particles are modeled as achiral Janus disks with fixed self-propulsion speed and…

Soft Condensed Matter · Physics 2025-02-20 Shubhadip Nayak , Poulami Bag , Pulak K. Ghosh , Yuxin Zhou , Qingqing Yin , Fabio Marchesoni , Franco Nori

Two-dimensional classical cluster of particles interacting through a screened Coulomb potential is studied. This system can be used as a model for "dusty particles" in high-frequency discharge plasma. For systems consisting of N = 2 - 40…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 G. E. Astrakharchik , A. I. Belousov , Yu. E. Lozovik

A single light-driven Janus particle confined in a very thin oil droplet at an air--water interface displays intriguing dynamics. While laser activation induces rapid horizontal motion (1mm/s--1cm/s) by thermal Marangoni flow, the particle…

Soft Condensed Matter · Physics 2025-09-29 Airi N. Kato , Kaili Xie , Benjamin Gorin , Jean-Michel Rampnoux , Hamid Kellay

In order to give a basis for the structure and correlation analysis of fine particle (dusty) plasma and colloidal suspensions, thermodynamic treatment of mixtures of macroscopic and microscopic charged particles within the adiabatic…

Plasma Physics · Physics 2015-06-11 Hiroo Totsuji

Micron-sized particles moving through solution in response to self-generated chemical gradients serve as model systems for studying active matter. Their far-reaching potential applications will require the particles to sense and respond to…

Soft Condensed Matter · Physics 2016-03-09 W. E. Uspal , M. N. Popescu , S. Dietrich , M. Tasinkevych

The dusty plasma liquid formed by micro-meter sized particles negatively charged and suspended in a low pressure discharge background is a good candidate to study the generic spatio-temporal dynamical behaviors at the kinetic level through…

Plasma Physics · Physics 2007-05-23 Chan Chia-Ling , Lai Ying-Ju , Woon Wei-Yen , Chu Hong-Yu , I. Lin

Density waves were studied in a phase-separated binary complex plasma under microgravity conditions. For the big particles, waves were self-excited by the two-stream instability, while for small particles, they were excited by heartbeat…

We investigate the phonon spectra of two-dimensional liquid dusty plasmas on a one-dimensional periodic substrate using numerical simulations. The propagation of the waves across the potential wells of the substrate is inhibited due to the…

Plasma Physics · Physics 2018-12-19 W. Li , D. Huang , K. Wang , C. Reichhardt , C. J. O. Reichhardt , M. S. Murillo , Y. Feng

To elucidate mechanisms of mesoscopic turbulence exhibited by active particles, we experimentally study turbulent states of non-living self-propelled particles. We realize an experimental system with dense suspensions of asymmetrical…

Soft Condensed Matter · Physics 2017-02-16 Daiki Nishiguchi , Masaki Sano

Agglomeration of highly charged microparticles was observed and studied in complex plasma experiments carried out in a capacitively coupled rf discharge. The agglomeration was caused by strong dust density waves triggered in a particle…

Plasma Physics · Physics 2010-11-29 Cheng-Ran Du , Hubertus Thomas , Alexei Ivlev , Uwe Konopka , Gregor Morfill

Experimental results on an auto-oscillatory pattern observed in a complex plasma are presented. The experiments are performed with an argon plasma which is produced under microgravity conditions using a capacitively-coupled rf discharge at…

We experimentally investigate active motion of spherical Janus colloidal particles in a viscoelastic fluid. Self-propulsion is achieved by a local concentration gradient of a critical polymer mixture which is imposed by laser illumination.…

Soft Condensed Matter · Physics 2016-03-31 Juan Ruben Gomez-Solano , Alex Blokhuis , Clemens Bechinger

We report on the observation of the self-excited dust density waves in the dc discharge complex plasma. The experiments were performed under microgravity conditions in the Plasmakristall-4 facility on board the International Space Station.…

Employing an attenuated oscillation method, the anisotropic interaction force between two vertically aligned dust particles located in the sheath of a complex plasma was measured experimentally based on a linear approximation to the…

Plasma Physics · Physics 2015-05-13 Jie Kong , Truell W. Hyde , Brandon Harris , Ke Qiao , Jorge Carmona Reyes

The hybrid Stimulated Raman Scattering - Two Plasmon Decay instability had shown to play the dominant role for plasma waves excitation and energy absorption at interaction of very intense femtosecond obliquely incident $p$-polarized laser…

Plasma Physics · Physics 2021-01-04 I. Tsymbalov , D. Gorlova , A. Savel'ev

Implications of recently discovered effect of channeling of upstream extra particles for transport phenomena in a two-dimensional plasma crystal are discussed. Upstream particles levitated above the lattice layer and tended to move between…

We introduce two discrete models of a collection of colliding particles with stored momentum and study the asymptotic growth of the mean-square displacement of an active particle. We prove that the models are superdiffusive in one dimension…

Probability · Mathematics 2020-01-08 Edward Crane , Sean Ledger , Balint Toth

We numerically investigated the Brownian motion of active Janus particles in a linear array of planar counter-rotating convection rolls at high P\'eclet numbers. Similarly to passive particles, active microswimmers exhibit advection…

Statistical Mechanics · Physics 2025-08-14 Pulak Kumar Ghosh , Fabio Marchesoni , Yunyun Li , Franco Nori

We provide an experimental proof-of-concept for a robust, continuously rotating microstructure - consisting of two metallodielectric (gold-polystyrene)Janus particles rigidly attached to each other - which is driven in uniform ac fields by…

Fluid Dynamics · Physics 2014-09-22 Alicia Boymelgreen , Gilad Yossifon , Sinwook Park , Touvia Miloh