Imagine a thin, centimeter-long square of silk -- a bit like a tiny stamp. This would be the basis of a dissolvable electronic circuit board that could be implanted under the skin, and used to kill infections.
"The circuit board is made from magnesium, on a film of silk," explains Fiorenzo Omenetto, Professor of Biomedical Engineering at Tufts University in Massachusetts.
"You put it inside an animal that has a bad abscess, you put the little band aid on, and you close it up. Then you turn the device on wirelessly and the resistor inside the animal heats up and the heat kills the infection -- two weeks later the whole device is dissolved."