Reentrant phase separation behavior of active particles with anisotropic Janus interaction
Mingfeng Pu1, Huijun Jiang, Zhonghuai Hou
1Department of Chemical Physics & Hefei National Laboratory for Physical Sciences at Microscales, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, China. hzhlj@ustc.edu.cn.
Active particles with tunable Janus interactions exhibit re-entrant phase separation. Weak interactions promote clustering, while strong interactions disrupt it, revealing a balance between self-propulsion and anisotropic forces.
Area of Science:
- Physics
- Soft Matter Physics
- Statistical Mechanics
Background:
- Active particle systems exhibit dynamic clustering and phase separation.
- The influence of anisotropic interactions on these phenomena remains largely unexplored.
Purpose of the Study:
- Investigate phase separation in active particles with tunable anisotropic Janus interactions.
- Understand the role of Janus interaction strength in cluster formation and stability.
Main Methods:
- Utilized Langevin dynamics simulations in two-dimensional space.
- Systematically varied the strength of the anisotropic Janus interaction.
Main Results:
- Observed re-entrant behavior in phase separation as a function of Janus interaction strength.
- Weak Janus interactions enhanced living cluster formation and phase separation.
- Strong Janus interactions led to the disruption of large clusters.
Conclusions:
- The interplay between self-propulsion and anisotropic Janus interactions governs phase separation.
- A delicate balance dictates the formation and stability of active particle clusters.
More Related Videos
11:51Visually Based Characterization of the Incipient Particle Motion in Regular Substrates: From Laminar to Turbulent Conditions
Published on: February 22, 2018
09:09Synthesis of PolyN-isopropylacrylamide Janus Microhydrogels for Anisotropic Thermo-responsiveness and Organophilic/Hydrophilic Loading Capability
Published on: February 27, 2016
Related Concept Videos
First Law: Particles in Two-dimensional Equilibrium
Newton's first law tells us about...
First Law: Particles in One-dimensional Equilibrium
Equilibrium Conditions for a Particle
To understand the concept of equilibrium, let us first consider the forces acting on an object. When different forces act on an object, they can...
Phase Transitions
Phase Transitions
Theories of Dissolution: The Danckwerts' Model and Interfacial Barrier Model
