A new passive technology could help future wireless networks reach places where signals struggle today. Dead zones are one of the most persistent problems in wireless communications. Whether it’s a basement office, a warehouse aisle, a tunnel, or a crowded indoor venue, signals often struggle to reach every corner. The challenge is expected to grow [...]

This record-breaking crystal can transform from mirror-like to glass-like, opening the door to tiny optical chips, AR displays, and smart contact lenses. Creating truly “invisible” wearable technology such as smart contact lenses and ultrathin augmented reality glasses will require a radical rethink of how optical devices are built. Instead of relying on conventional bulky components, [...]

A decades-old psychology test exposed a surprising weakness in AI’s ability to stay focused. A classic psychology test has revealed a surprising weakness in some of today’s most advanced artificial intelligence systems, suggesting that AI attention may work very differently from human attention. Researchers led by Suketu Patel investigated how large language models (LLMs), the [...]