We the droplets: A constitutional approach to active and self-propelled emulsions

The field of active matter, and particularly emulsions, is growing rapidly, with significant progress made recently on both theoretical experimental fronts. Here, we summarize research related to droplets. constitution droplets, in particular the chemical compositions structure interfaces, critical. We discuss how emulsion properties such as mechanism motion, speed, trajectory, interaction strength, lifetime are droplet composition. consider not only traditional single emulsions but also more complex variants, Janus Pickering multiple emulsions. Active behavior isolated droplets well pairwise multibody interactions between described. influence physical barriers that shape local gradients fluid flow highlighted. This review provides perspective past, current, promising future directions research.