Yu Ma, Wenjing Li, Yi Liu, Liwei Tang, Qingshun Fan, Rui Xiao, Junhua Luo, Zhihua Sun. "Distinct Tunable In‐Plane Birefringence via Domain Manipulation in a 2D Metal Halide Ferroelectric." Angewandte Chemie International Edition (2026). https://doi.org/10.1002/anie.1510753