The future of naval operations is heavily dependent on the advent of effective drone fleets of surface and underwater capability. Such fleets would require frequent and local recharging, which poses a critical logistics problem. We are working on solving that problem through the development of renewable power sources using benthic bacteria. These sources are biofuel cells that harness the capability of such bacteria to output power as part of their life processes.

Hypothermia is a major health hazard for divers, as humans lose heat to water at least 5 times faster than to air. Hypothermia can lead to unconsciousness, organ damage, and eventually death. Divers typically wear bubbled neoprene wetsuits to protect themselves from these harsh conditions. However, wetsuits have their limitations. Air bubbles within the neoprene shrink with depth under the increasing ambient pressure, which degrades the suit’s thermal protection. Thicker neoprene is warmer but is less flexible and fatigues the diver faster. We have come up with and are testing an alternative solution based on incompressible hollow microspheres embedded in carrier polymer, with the resulting suits outperforming neoprene in both thermal protection and ergonomics.