Chiral Active Matter

TL;DR

This paper reviews recent advances in chiral active matter, highlighting single-particle behaviors and collective phenomena such as vortex formations, micro-flock patterns, and unique rheological states.

Contribution

It provides a comprehensive overview of recent developments in understanding the dynamics and collective behaviors of chiral active particles.

Findings

Observation of vortex arrays in chiral active systems

Formation of rotating micro-flocks and patterns

Unusual rheological properties in chiral active matter

Abstract

Chiral active matter comprises particles which can self-propel and self-rotate. Examples range from sperm cells and bacteria near walls to asymmetric colloids and pea-shaped Quincke rollers. In this perspective article we focus on recent developments in chiral active matter. After briefly discussing chiral active motion at a single particle level, we discuss collective phenomena ranging from vortex arrays and patterns made of rotating micro-flocks to states featuring unusual rheological properties.