Active assembly is a research area focused on the development of systems and technologies for the autonomous assembly of complex structures and systems using active components that can sense, actuate, and communicate with each other. This field draws inspiration from biological systems, such as cells and swarms, to design and develop self-organizing and self-repairing systems that can assemble themselves into desired configurations without external intervention. Active assembly has applications in a wide range of fields, including robotics, materials science, and nanotechnology.