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Preparation and 3D Tracking of Catalytic Swimming Devices

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Published on: July 1, 2016

Engineering Contactless Particle-Particle Interactions in Active Microswimmers.

Amir Nourhani¹, Daniel Brown¹, Nicholas Pletzer¹

¹Department of Physics and Astronomy, Northern Arizona University, Flagstaff, AZ, 86011, USA.

Advanced Materials (Deerfield Beach, Fla.)

|December 15, 2017

Summary

Researchers engineered artificial self-propelled Janus particles with tunable, long-range interactions. This system allows for systematic study of novel multiparticle dynamics in nonequilibrium systems.

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Area of Science:

Physics
Soft Matter Physics
Chemical Engineering

Background:

Artificial self-propelled colloidal particles are key to studying nonequilibrium systems.
Previous research primarily used excluded volume interactions.
Need for systems with controllable, long-range interactions is critical.

Purpose of the Study:

To engineer a system of microscale Janus particles with tunable, long-range interactions.
To investigate novel multiparticle dynamics in laboratory settings.
To explore new modes of collective behavior in active matter.

Main Methods:

Fabrication of microscale Janus particles.
Engineering contactless particle-particle interactions (attraction and repulsion).

Keywords:

active matter contactless interactions dipole alignment magnetic Janus particles

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Modulation of system parameters to tune particle behavior.

Main Results:

Achieved long-range attraction and short-range repulsion between particles.
Observed mutual alignment between adjacent self-propelled swimmers.
Demonstrated tunable control over particle motion and interactions.

Conclusions:

The engineered Janus particle system provides a versatile platform for studying active matter.
Tunable long-range interactions enable systematic investigation of complex dynamic behaviors.
This work opens new avenues for exploring collective phenomena in nonequilibrium systems.