2+ day, 1+ hour ago   (429+ words) Latest mages show that China’s “WZ-X” drone has what appear to be stealth features, hinting at a role spying deep inside defended airspace. New images are circulating that appear to show China’s latest American B-2 “Spirit” looking stealth drone, the…...

1+ week, 1+ day ago   (360+ words) By embedding tiny dielectric structures inside the semiconductor, researchers created a laser that can control light in a new way. A laser does not always need a perfectly repeating pattern to produce a clean beam. The device produced single-mode lasing…...

1+ week, 2+ day ago   (365+ words) Researchers have developed a tiny semiconductor device that can change the frequency, or color, of light far more efficiently than conventional designs, potentially shrinking components used in telecommunications and quantum technologies. The device combines specially engineered semiconductor layers with a…...

1+ week, 3+ day ago   (518+ words) Clean energy can finally afford to be fully clean. Scientists have created a tin-based perovskite material equipped with a built-in defense against air and moisture, functioning much like a molecular raincoat for solar cells. The advance is the result of…...

1+ week, 3+ day ago   (397+ words) Inverted perovskite solar cells can reach an energy conversion efficiency of 24.6 percent when treated with a new chemical process. The performance marks a clear step up from standard versions of the device. The gains rely on a two-step method using…...

2+ week, 2+ day ago   (907+ words) Extreme heat does more than make a machine uncomfortable. It can soften metals, damage electronic circuits, break down lubricants, and cause vital components to crack. The challenge is growing as data centers become more powerful and aircraft engines run hotter....