| 초록 |
3D printing technique has attained much attention recently, but the resolution of the conventional 3D printing has limited as upper mm-scale. Herein, we present the electro-assisted 3D printing technique named charge-reversed electro-jet writing (CREW) that support µm-scaled resolution using either a single polymer or combinations of different polymers. Compared to conventional electro-assisted printing methods, the high positive charged voltage is applied onto the substrate while the ground is connected with the conductive syringe tip. As the reverse connection of the applied voltage, the CREW system can provide more stable polymeric jet, and precise micro-sized polymeric thread at desired location. In addition, it also provides control for configuration of polymeric threads such as biphasic and core-shell structure. Importantly, a wide range of polymeric solutions are readily adopted and interchanged without tedious optimization to manufacture 3D architectures. |
