Imagine a material that can be 3D printed into complex electronic structures, conducts electricity efficiently, works safely with the body, and does not need lengthy chemical treatment after printing . Scientists have now taken an important step toward making this possible. A research team led by Oh has developed a new type of conductive ink called PEDOT:PSS-ionic liquid colloidal (PILC) ink . The material is designed for 3D printing of bioelectronic devices and could help researchers build flexible sensors, medical implants and other electronic systems that interact directly with the human body. The development addresses several major problems that have limited the use of conductive polymers in 3D printing. Why PEDOT:PSS Is Important Three-dimensional printing has become an important manufacturing technology because it can quickly create customized objects with complicated shapes. In healthcare and biomedical research, 3D printing is especially useful because devices can be designed f...