Wide-field photothermal reflectance spectroscopy for single nanoparticle absorption spectrum analysis - Kim, Jung-Dae; Kim, Dong Uk; Jeong, Chan Bae; Han, Ilkyu; Bae, Ji Yong; Hur, Hwan; Nam, Ki-Hwan; Hyun, Sangwon; Kim, I Jong; Lee, Kye-Sung; Chang, Ki Soo (Nanophotonics, 2021)