Synthesis of Monodisperse Bicolored Janus Particles with Electrical Anisotropy Using a Microfluidic Co‐Flow System

A planar microfluidic system produces monodisperse biphasic droplets that are subsequently polymerized to form bicolored Janus microspheres (see figure). Engineered spheres have a dipolar character and can be electrically actuated for application in a particle-based electronic paper display. A scale-up approach using multiple-channel integration on a chip is also described, which achieves high throughput for practical material production.