MedGadget -- Researchers from Northwestern University, Princeton, and Argonne National Laboratory used bacteriaswimming in liquid to turn tiny gears suspended in the same medium. Various gear designs have already been developed (side image) that can harness the power of the bacteria. We recently reported on a project out of the University of Rome that has achieved what seems like the same feat. If it proves to be practical, this technology may one day power implantable medical microdevices.
