MIT engineers connect bacteria to create living transistors

MIT researchers engineered bacteria that can function as transistors, enabling the creation of living “circuit boards.” These bacteria could someday coat plant leaves or roots, computing to respond to drought or pests. The researchers created their circuits by printing colonies of bacteria onto plates containing agar, a growth medium. Each colony is printed about 5 millimeters from the nearest one. This allows the signals to travel only to the nearest colony, which then relays them to the next one, so information flows only in one direction.

Source: news.mit.edu