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Laser-Powered Robot Insect Achieves Lift-Off

Everything is better with lasers, especially tiny robot insects. For robots of all sizes, power is a fundamental problem. Any robot that moves is constrained in one way or another by power supply, whether it’s relying on carrying around heavy batteries, combustion engines, fuel cells, or anything else. It’s particularly tricky to manage power as

Researchers Boost Efficiency and Stability of Optical Rectennas

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

NRL Improves Optical Efficiency in Nanophotonic Devices

A team of physicists, headed by the U.S. Naval Research Laboratory (NRL), have demonstrated the means to improve the optical loss characteristics and transmission efficiency of hexagonal boron nitride devices, enabling very small lasers and nanoscale optics. “The applications for this research are considerably broad,” said Dr. Alexander J. Giles, research physicist, NRL Electronics Science