Rapid 3D Printing Magnetically Active Microstructures with High Solid Loading

The cover image presents a 3D printed 9‐mm‐height magnetically‐active structure featuring intricate 3D shapes and fine (sub‐75‐μm) features. The strong magnetic interaction allows it to be suspended against gravity using a small magnet on the top. It was accomplished via the synergy of the optimization of magnetic photopolymerizable resin and the high‐speed 3D printing using micro‐continuous liquid interface production (μCLIP) process. Further details can be found in the article, number 1900911 by Longqiu Li, Cheng Sun, and co‐workers.