Brainbots as smart autonomous active particles with programmable motion

TL;DR

This paper introduces a programmable robotic device that generates controlled, cycloidal motion for active matter studies, enabling diverse dynamic behaviors from ballistic to diffusive motion.

Contribution

The paper presents a novel vibrobot design with programmable motion capabilities, allowing precise control of active particle trajectories for research purposes.

Findings

Successfully characterized and optimized cycloidal trajectories.

Demonstrated versatile motion patterns including ballistic and run-and-tumble behaviors.

Showcased potential for studying active matter dynamics.

Abstract

We present an innovative robotic device designed to provide controlled motion for studying active matter. Motion is driven by an internal vibrator powered by a small rechargeable battery. The system integrates acoustic and magnetic sensors along with a programmable microcontroller. Unlike conventional vibrobots, the motor induces horizontal vibrations, resulting in cycloidal trajectories that have been characterized and optimized. Portions of these orbits can be utilized to create specific motion patterns. As a proof of concept, we demonstrate how this versatile system can be exploited to develop active particles with varying dynamics, ranging from ballistic motion to run-and-tumble diffusive behavior.