Laser-direct-writing of molecule-like Ag nanoclusters in transparent tellurite glass for 3D volumetric optical storage.

constructing program-designed nanostructures laser-direct-writing (LDW) has proved to be a reliable strategy for optical storage (OS). Herein, a kind of low-melting Ag-doped TeO-ZnO-NaO (TZN) tellurite glass has been demonstrated as an ideal LDW OS medium. Microstructural and spectroscopic studies reveal the generation of molecule-like Ag nanoclusters featured with a broad emission band in the orange-red region upon laser irradiation.