Journal
LAB ON A CHIP
Volume 9, Issue 19, Pages 2775-2781Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b905832j
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Funding
- Bill & Melinda Gates Foundation [51308]
- DARPA through the Caltech optofluidics
- MF3 Micro/Nano Fluidics Fundamentals Focus Center
- Howard Hughes Medical Institute
- Harvard-MIT Division of Health Science and Technology
- NIH
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This article describes an electronic display that is fabricated by patterning electrically conductive wires (heaters) with micron-scale dimensions on one side of a sheet of paper, and thermochromic ink on the opposite side. Passing electrical current through the wires heats the paper and changes the thermochromic ink from colored (black, green, or other colors) to transparent; this change in property reveals the paper underneath the ink-exposing any messages printed on the paper-and serves as the basis for a two-state shutter'' display. This type of display is thin (100 mm), flat, lightweight (the display weighs < 20 mg/cm(2)), can be folded, rolled, twisted, and creased while maintaining function, and ultimately can (if required) be disposed of by incineration. The display is appropriate for applications where information must be presented clearly (usually only once) for little cost (each display costs <$0.10/m(2) in materials) and where limited electrical power is available.
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