Carmel Majidi: Electronic Tattoos for Wearable Computing: Stretchable, Robust, and Inexpensive
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Carmel Majidi: Electronic Tattoos for Wearable Computing: Stretchable, Robust, and Inexpensive


We’re reporting a new way of creating electronic
tattoos. These are circuits that are printed on temporary
tattoo film, just like, you know, you can just buy commercially, that’s used for a
children’s tattoo. The way that we use this tattoo film is we
print circuits made of silver nanoparticles, and then what we do is we coat those silver
nanoparticles with a liquid metal alloy. And the liquid metal fuses with the silver
to create these conductive wires on the tattoo. The tattoo can easily be transferred to skin
and the conductivity is high enough to support digital circuit functionally. The circuit remains functional even as it
stretches. So we would use the electronic tattoo to create
circuits that could go on the body to power any types of devices that you want mounted
to your skin. One example could be a touch interface that
would augment any kind of wearable electronic, or personal electronic device that you could
have. It could also be used to wire up an accelerometer
that could track your body motion. Electronic tattoos like the one we’ve developed
could be used for applications in health care. It could be used for physiological monitoring. It could be used for gaming, or pretty much
any other application where you would want electronics that either track your motion
or can measure your vitals that would be in intimate contact with your skin. Just like any temporary tattoo, we can easily
just wash off when you don’t want to use it anymore, and it’s unobtrusive. You can have it under your clothing, or you
could just have it on your skin but not worry about having it impair your natural motion.

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