A rainbow of LEDs adorns objects at the stroke of a pen
A green LED created by laying down conductive inks shines from the fingertip of a vinyl glove . Credit: Junyi Zhao et al./Nat. Photonics
By filling common ballpoint pens with inks made of various conductive materials, researchers have hand-drawn light-emitting diodes (LEDs) on paper, fabric and everyday 3D objects1.
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Nature 620, 925 (2023)
doi: https://doi.org/10.1038/d41586-023-02655-w
Zhao, J., Lo, L-W., Yu, Z. & Wang, C. Nature Photonics https://doi.org/10.1038/s41566-023-01266-1 (2023).
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