Architecting Graphene Oxide Rolled‐Up Micromotors: A Simple Paper‐Based Manufacturing Technology

A graphene oxide rolled‐up tube production process is reported using wax‐printed membranes for the fabrication of on‐demand engineered micromotors at different levels of oxidation, thickness, and lateral dimensions. The resultant graphene oxide rolled‐up tubes can show magnetic and catalytic movement within the addition of magnetic nanoparticles or sputtered platinum in the surface of graphene‐oxide‐modified wax‐printed membranes prior to the scrolling process. As a proof of concept, the as‐prepared catalytic graphene oxide rolled‐up micromotors are successfully exploited for oil removal from water. This micromotor production technology relies on an easy, operator‐friendly, fast, and cost‐efficient wax‐printed paper‐based method and may offer a myriad of hybrid devices and applications.