Fig. 1: Design of the shape-evolving microfiber rail (SEMR).
From: Spontaneous droplet transport on shape-evolving microfiber rails
a Domino-effect-inspired design of a non-gradient SEMR system composed of two parallel microfibers with stimuli-responsive deformability. The system dynamically generates geometric gradients to drive directional transport of droplets. b Schematic showing the hygroscopically responsive deformation of the microfiber designed for directional water droplet transport. c Asymmetry in either the droplet deposit position or surface microstructures, laying the basis for generating dynamically evolving gradients.
