Results 111 to 120 of about 5,462,018 (286)

Nonlinear Brownian motion - mean square displacement

open access: yesCondensed Matter Physics, 2004
The stochastic dynamics of self-propelled Brownian particles is studied by means of the Langevin and the Fokker-Planck approach. We model the driving by a nonlinear friction function which has a negative part at small velocities, leading to active ...
W.Ebeling
doaj   +1 more source

The Countoscope for self-propelled particles

open access: yes
Particle number fluctuations $N(t)$, measured in virtual observation boxes of an image or a simulation, offer a way to quantify particle dynamics when particle tracking is impractical, such as in high-density systems. While traditionally limited to equilibrium diffusive systems, we extend this approach -- named ``Countoscope'' -- to out-of-equilibrium ...
Cerdin, Tristan   +3 more
openaire   +2 more sources

Cross‐Scale Hierarchical Targeted Delivery System Based on Small‐Scale Magnetic Robots

open access: yesAdvanced Robotics Research, EarlyView.
This article reviews a cross‐scale hierarchical targeted delivery system that integrates magnetic continuum robots and magnetic microrobots. By combining rapid long‐range navigation with precise microscale targeting, the system overcomes key limitations of single‐scale approaches.
Junjian Zhou   +4 more
wiley   +1 more source

Local disalignment can promote coherent collective motion

open access: yesNew Journal of Physics, 2013
When particles move at a constant speed and have the tendency to align their directions of motion, ordered large-scale movement can emerge despite significant levels of noise.
M Meschede, O Hallatschek
doaj   +1 more source

Dynamical self-regulation in self-propelled particle flows

open access: yesPhysical Review E, 2012
5 ...
Gopinath, Arvind   +3 more
openaire   +4 more sources

MicroRoboScope: A Portable and Integrated Mechatronic Platform for Magnetic and Acoustic Microrobotic Experimentation

open access: yesAdvanced Robotics Research, EarlyView.
This work presents the MicroRoboScope, a highly integrated, compact, and portable microrobotic experimentation platform combining electromagnetic and acoustic actuation with real‐time visual feedback into a single, end‐to‐end device. The system enables closed‐loop control and tracking algorithm experimentation within an accessible and unified hardware ...
Max Sokolich   +4 more
wiley   +1 more source

Light-switchable propulsion of active particles with reversible interactions

open access: yesNature Communications, 2020
Fast control over propulsion direction modulates interactions between self-propelled particles and opens new avenues for the design of active materials.
Hanumantha Rao Vutukuri   +3 more
doaj   +1 more source

The collective dynamics of self-propelled particles

open access: yes, 2008
We propose a method for the dynamic simulation of a collection of self-propelled particles in a viscous Newtonian fluid. We restrict attention to particles whose size and velocity are small enough that the fluid motion is in the creeping flow regime.
Mehandia, Vishwajeet, Nott, Prabhu R
core  

Magnetic Micro‐ and Nanorobots for Precision Thrombolysis: Design Strategies and Translational Challenges

open access: yesAdvanced Robotics Research, EarlyView.
Micro‐ and nanorobots for targeted thrombolysis. This perspective elaborates on the clinical indication of blood clot disorders and current limitations for treatment. As a novel, alternative solution, micro‐ and nanorobots can be used to treat and break down thrombi.
Joshua M. Mesfin   +3 more
wiley   +1 more source

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