Melt away

Ultra-thin electronics that dissolve inside the body have been devised by scientists in the US and could be used for a range of medical roles. The devices can "melt away" once their job is done, according to research published in the journal Science. The technology has already been used to heat a wound to keep it free from infection by bacteria. The components are made of silicon and magnesium oxide, and placed in a protective layer of silk.
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