[News] UIUC Achieves Record Modulation Bandwidth of 2.75 GHz for GaN Blue Micro-LEDs

University of Illinois at Urbana-Champaign (UIUC) has achieved a record modulation bandwidth of 2.75GHz in a gallium nitride (GaN) blue micro-LED (Abdelghany Abouelnagga et al, IEEE Electron Device Letters (21 October 2026); doi: 10.1109/LED.2026.3745737). The work provides a systematic scaling roadmap for the micro-emitters, showing how they can replace conventional electrical copper links to break energy and bandwidth bottlenecks in data centers and next-generation AI computing. As the demands of artificial intelligence and high-performance computing s...