This research presents an implantable, miniaturized power generating system, a biofuel cell, which scavenges power from living organisms. The system harvests carbohydrates such as sugars stored inside the organism and, via an enzyme catalyst, decomposes these carbohydrates to generate electrical power. Our initial target for these devices is as a power supply for cyborg beetles. Our group has previously developed cyborg beetles, live beetles driven by wireless neural stimulator mounted on the dorsal thorax (see BPN 451). The stimulators are currently powered by a conventional...