(35f) Directed Assembly and Motion of Patterns in Active Matter

Self-propelled colloidal particles have recently emerged as promising candidates for soft matter robotics building blocks. Using numerical simulations, we examine how a cluster of a specific shape can be created in a system composed of two-dimensional active colloidal particles. To achieve this, we subject the active fluid to a spatio-temporal pattern for an external stimulus, which, in turn, controls the activity of the self-propelled particles. We then show how programming the translation and/or rotation for this pattern can, as a result, control the motion of the particles cluster, and explore how the interplay between the velocity or the frequency for the rotation of the pattern and the velocity of the active particles impacts the motion of the particles cluster.