Along with the usual mix of teabags, banana skins and egg shells, compost bins of the future could contain biodegradable electronic circuits, The electronic components could also be made biocompatible, so they could be implanted into the body for a short period of time before being broken down and absorbed without the need for a second operation to remove the implant. Such devices could include electronically activated drug-release systems or temporary biosensors. Biodegradable polymers have been used to manufacture these circuits which have the potential to degrade with time. The transistor was shown to perform sufficiently well to operate simple devices that would be suitable for functions such as biosensing, and continue to work for several hours in the presence of water. This discovery is a remarkable one in the field of electronics.
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