Report summary

The 2024-2026 picture for University of California, Irvine Department of Physics and Astronomy is a 18-PI network with 8 internal PI collaborations. The main research signal is Physics and Astronomy as the leading field (43% of slots across 13 PIs; 13 labels), Atomic and Molecular Physics, and Optics as the leading subfield (21% of slots across 9 PIs; 9 labels), and Topological Materials and Phenomena as the leading topic (7% of slots across 4 PIs; 4 labels). That is a thin collaboration pattern, useful for spotting individual pairs but less persuasive as a broad departmental network. The leading PI names are Huolin L. Xin (12.8 weighted works; Advanced Battery Materials and Technologies, Advancements in Battery Materials). The clearest collaboration lines are Xiaoqing Pan and Ruqian Wu (8 shared works, weight 3.5). The leading breakdown groups are group 1 with 4 PIs, 6 internal connections, weight 6.5, around Atomic and Molecular Physics, and Optics, Materials Chemistry, Mechanics of Materials, led by Xiaoqing Pan, Ruqian Wu, Javier Sanchez-Yamagishi.