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The research team that announced the first optical rectenna in 2015 is now reporting a two-fold efficiency improvement in the devices — and a switch to air-stable diode materials. The improvements could allow the rectennas – which convert electromagnetic fields at optical frequencies directly to electrical current – to operate low-power devices such as temperature
A team of researchers from the Georgia Institute of Technology has developed a way to use 3-D printers to create objects capable of expanding dramatically that could someday be used in applications ranging from space missions to biomedical devices. The new objects use tensegrity, a structural system of floating rods in compression and cables in
What does the future of air-to-air combat sound like? At this point, it could sound very much like a swarm of angry bees. That”s how researcher Michael Day described the recent DARPA Service Academies Swarm Challenge, which pitted mixed groups of up to 25 highly autonomous unmanned aerial vehicles (UAVs) on a side against one