Laser Induced Coffee‐Ring Structure through Solid‐Liquid Transition for Color Printing (Small 6/2023)

Coffee-Ring Structures In article number 2205696, Jianfeng Yan and co-workers propose a strategy of laser induced transient solid-liquid transition to fabricate coffee-ring structures. Through modulating the transient state of metal from solid to liquid phase using ultrafast laser pulse train, the controllable fabrication of coffee-ring structures is achieved. The coffee-ring structure exhibit tunable structure color, which can be used for color printing.