More useful bacteria communication:
Electrodes have been used to trap, interrogate and release individual bacteria in a bio-electronic circuit that could be used to construct nanoscale machines.
“One of the great challenges of nanotechnology remains the assembly of nanoscale objects into more complex systems,” says Robert Hamers of the University of Wisconsin-Madison. “We think that bacteria and other small biological systems can be used as templates for fabricating even more complex systems.”
Link.