机译:Photonic crystal films with upconversion luminescence based on the self-assembly of polystyrene encapsulated NaYF_4:Ln~(3+) composite microspheres for dual-mode optical code
Hunan Univ Technol, Coll Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China;
Dual-mode optical code; Structural color; Upconversion fluorescence; Composite microspheres; Self-assemble;