Abstract: This article presents an efficient synthesis method for generating vortex beams based on donut-shaped orbital angular momentum (OAM) metasurfaces. It not only allows one to synthesize the ...

The BBC have confirmed the release date for the upcoming Doctor Who: Unleashed special and has announced more special guests ...

California-based AI company Anthropic just announced the new Claude 4 models. These are Claude Opus 4 and Claude Sonnet 4.