Yue Zhang, Dengfu Lu, Ying Ma, Yonggui Liao, Xingping Zhou, Zhong'an Li, Haiyan Peng, Xiaolin Xie. "Point‐Excitation Wide‐Field Upconversion Imaging via a Holographic Polymer Waveguide." Advanced Materials (2026). https://doi.org/10.1002/adma.202521024