In 2000, a Russian cruise-missile submarine — Kursk — sank, killing all 118 sailors on board. The Russian government concluded the ship sunk due to a faulty weld which caused a gas leak and led to an explosion.   The U.S. Navy in August 2018 said that there’s a problem …

“It was in the oceans that life first evolved and where complex animals have thrived for over 600 million years. Marine animals survive in environments as diverse as tropical coral reefs, polar ice-capped oceans, and the lightless abyssal depths,” says Frank E. Fish from West Chester University and Donna M. …

GaN is a semiconductor material that can amplify high power radio frequency signals efficiently at microwave frequencies  to enhance  a system’s range. Therefore it has become the technology of choice for high-RF power applications that require the transmission of signals over long distances such as EW, radar, base stations and satellite communications. The advantages of GaN-based devices stems largely from the attractive intrinsic physical properties of the material. The material …