Introduction: In a monumental leap toward the future of timekeeping, an international research team has achieved a groundbreaking advancement in atomic clock technology. Conducted at the European XFEL X-ray laser, the team’s research centers on a new pulse generator based on scandium, a transition that demonstrates remarkable precision, setting a …

Introduction In the rapidly evolving landscape of the electromagnetic spectrum (EMS), DARPA’s COmpact Front-end Filters at the ElEment-level (COFFEE) program emerges as a pioneering initiative. Aimed at enhancing the capabilities of Active Electronically Scanned Arrays (AESAs), COFFEE addresses the critical need for heightened performance and adaptability in the modern EMS …