The hidden force of growth: Dividing cell colonies drive phase separation in passing particles

In physics, the spontaneous de-mixing of two substances is known as phase separation. It is an important mechanism in nature to create structure and patterns and typically requires some form of attraction between the constituents. Researchers at the Max Planck Institute for Dynamics and Self-Organization (MPI-DS) in Göttingen, together with collaborators at the University of Edinburgh and the Institute of Physical Chemistry in Warsaw, have now discovered a new route to phase separation available in systems where the constituents are inherently alive or active.