Tattoos will soon be as electric and alive
as those in whose skin they are permanently etched.
By building thin, flexible silicon electronics on silk substrates, researchers have made electronics that almost completely dissolve inside the body.
So far the research group has demonstrated arrays of transistors made on thin films of silk. While electronics must usually be encased to protect them from the body, these electronics don’t need protection, and the silk means the electronics conform to biological tissue. The silk melts away over time and the thin silicon circuits left behind don’t cause irritation because they are just nanometers thick.
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