Microwave technology is at the heart of modern communication systems, radar technology, satellite communication, and even advanced medical devices. Operating in the frequency range of 300 MHz to 300 GHz, microwave components and devices have unique characteristics that make them essential in high-frequency applications. From enabling wireless communication to powering …

The Invisible Interface Revolution Imagine reading a novel on a postage‑stamp screen while jogging—this encapsulates the optical engineering nightmare in today’s AR glasses and smartwatches. As wearables shrink, the demand for ultrahigh‑definition (UHD) pixel density explodes: recent advances now reach over 25,000 pixels per inch (PPI), far exceeding the ~460 …