Active colloids use energy input at the particle level to propel persistent motion and direct
dynamic assemblies. We consider three types of colloids animated by chemical reactions …

Since their invention in 1986 by Arthur Ashkin and colleagues, optical tweezers have
become an essential tool in several fields of physics, spectroscopy, biology …

Environmental contamination is a major global challenge, and the effects of contamination
are found in most habitats. In recent times, the pollution by microplastics has come to the …

Pair interactions between active particles need not follow Newton's third law. In this work, we
propose a continuum model of pattern formation due to nonreciprocal interaction between …

Activity and autonomous motion are fundamental in living and engineering systems. This
has stimulated the new field of'active matter'in recent years, which focuses on the physical …

Chiral active matter comprises particles which can self-propel and self-rotate. Examples
range from sperm cells and bacteria near walls to autophoretic L-shaped colloids. In this …

Conspectus Photocatalytic materials are gaining popularity and research investment for
develo** light-driven micromotors. While most of the early work used highly stable TiO2 as …

We investigate collective dynamics in a binary mixture of programmable robots in
experiments and simulations. While robots of the same species align their motion direction …

The past two decades have seen a remarkable progress in the development of synthetic
colloidal agents which are capable of creating directed motion in an unbiased environment …

Non-equilibrium assemblies, where units are able to harness available energy to perform
tasks, can often self-organize into dynamic materials that uniquely blend structure with …