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  • Silver pen has the write stuff for flexible electronics

    A flexible array of LEDs mounted on paper. Hand-drawn silver ink lines form the interconnects between the LEDs.

    A flexible array of LEDs mounted on paper. Hand-drawn silver ink lines form the interconnects between the LEDs.

    Photo by Bok Yeop Ahn

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  • Editor's note: To contact Jennifer Lewis, call 217-244-4973; email jalewis@illinois.edu. The paper, “Pen-on-Paper Flexible Electronics,” is available online.