Guanyun Wang1 Tingyu Cheng1 Youngwook Do1 Humphrey Yang2 Ye Tao1 Jianzhe Gu1 Lining Yao1

1, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States
2, Carnegie Mellon University, Pittsburgh, Pennsylvania, United States

We present a printed paper actuator as a low cost, reversible and electrical actuation and sensing method. This is a novel but easily accessible enabling technology that expands upon the library of actuation-sensing materials in HCI. By integrating three physical phenomena, including the bilayer bending actuation, the shape memory effect of the thermoplastic and the current-driven joule heating via conductive printing filament, we developed the actuator by simply printing a single layer conductive Polylactide (PLA) on a piece of copy paper via a desktop fused deposition modeling (FDM) 3D printer. This paper describes the fabrication process, the material mechanism, and the transformation primitives, followed by the electronic sensing and control methods. A software tool that assists the design, simulation and printing toolpath generation is introduced. Finally, we explored applications under four contexts: robotics, interactive art, entertainment and home environment.