Fused Deposition Modeling 3D Printing-based Flexible Bending Sensor

초록

Recently, to improve convenience, flexible electronics are quickly being developed for a number ofapplication areas. Flexible electronic devices comprise characters such as being bendable, stretchable, foldable,and wearable. Effectively manufacturing flexible electronic devices requires high efficiency, low costs, andsimple processes for manufacturing technology. Through this study, we enabled the rapid production ofmultifunctional flexible bending sensors using a simple, low-cost Fused Deposition Modeling (FDM) 3Dprinter. Furthermore, we demonstrated the possibility of the rapid production of a range of functional flexiblebending sensors using a simple, low-cost FDM 3D printer. Accurate and reproducible functional materialsmade by FDM 3D printers are an effective tool for the fabrication of flexible sensor electronic devices. The3D-printed flexible bending sensor consisted of polyurethane and a conductive filament. Two patterns ofelectrodes (straight and Hilbert curve) for the 3D printing flexible sensor were fabricated and analyzed for thecharacteristics of bending displacement. The experimental results showed that the straight curve electrodesensor sensing ability was superior to the Hilbert curve electrode sensor, and the electrical conductivity of theHilbert curve electrode sensor is better than the straight curve electrode sensor. The results of this study willbe very useful for the fabrication of various 3D-printed flexible sensor devices with multiple degrees offreedom that are not limited by size and shape.

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