5+ day, 29+ min ago   (501+ words) This post is also available in: עברית (Hebrew) As wireless networks become faster and more demanding, the tiny radio-frequency chips inside smartphones and communication systems are approaching their physical limits. Acoustic wave devices, key components that filter wireless signals, are…...

3+ week, 6+ day ago   (336+ words) Wearable sensors need to remain soft and conductive as the body moves, but cold weather presents a basic materials problem. Many flexible sensors use water-rich hydrogels, and when that water freezes, the material can become stiff and lose the ionic…...

4+ week, 7+ hour ago   (202+ words) The researchers built their system using extensive star databases and prototype sensing hardware. Observed star patterns are compared with stored references, allowing the navigation system to determine how the vehicle is oriented and use that information as part of its…...