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Emerging activity in bilayered dispersions with wake-mediated interactions
Jörg Bartnick1, Andreas Kaiser2, Hartmut Löwen1
1Institut für Theoretische Physik II: Weiche Materie, Heinrich-Heine-Universität Düsseldorf, D-40225 Düsseldorf, Germany.
The Journal of Chemical Physics
|June 17, 2016
Summary
Particle interactions in bilayered systems break action-reaction symmetry, leading to self-propelled clusters. This novel activity drives unusual melting and high diffusivity in dense fluids, verifiable in experiments.
Area of Science:
- Soft Matter Physics
- Complex Systems
- Statistical Mechanics
Background:
- Bilayered particle systems with wake-mediated interactions are studied.
- Action-reaction symmetry is crucial in classical mechanics but can be broken in complex systems.
Purpose of the Study:
- To investigate the consequences of broken action-reaction symmetry in bilayered particle systems.
- To explore the emergence of active matter phenomena from nonreciprocal interactions.
Main Methods:
- Theoretical analysis using analytical methods.
- Computational modeling via computer simulations.
Main Results:
- Nonreciprocity in interactions, exceeding a threshold, induces active dispersion of self-propelled Brownian particle clusters.
- Emergent activity leads to unusual melting behaviors in the system.
- Enormous diffusivity is observed in the dense fluid phase.
Conclusions:
- Broken action-reaction symmetry in bilayered systems can spontaneously generate active matter.
- The findings offer new insights into phase transitions and transport phenomena in complex fluids.
- Experimental verification is possible with colloidal dispersions and complex plasmas.
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