Organ in a drop: we use droplet-based microfluidics to fabricate large-scale, monodisperse, portable micro organs, each in an individual drop. We spatially assemble hepatocytes and fibroblasts in a biocompatible core–shell scaffold, forming an artificial liver in each drop, and expressing enhanced liver-specific functions.

We report new chemiluminescent properties of fluorescent carbon dots in the presence of classical oxidants, such as acidic potassium permanganate and cerium(IV). The radiative recombination of oxidant-injected holes and electrons in the carbon dots accounts for the CL emission, which sheds new light on characteristics of the carbon dots.