Nature CommunicationsChem-SIM: SIM-resolved chemical imaging via wide-field mid-infrared photothermal modulation of fluorescenceDashan DongDanchen JiaXinyan TengJianpeng AoGeorge Abu-AqilBiwen GaoMeng ZhangQing XiaJi-Xin Cheng2026-08-17Full textDOI https://doi.org/10.1038/s41467-026-76934-1