期刊
NANOSCALE
卷 13, 期 46, 页码 19663-19670出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1nr05360d
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资金
- National Natural Science Foundation of China [51872288, 11774346, U2005213, 51972303, 11974350]
- Fujian Provincial Key Project of Science Technology [2020H0035]
- Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China [2021ZR134]
In situ constructing program-designed nanostructures via laser-direct-writing (LDW) has been proven as a reliable strategy for optical storage (OS), with low-melting Ag+-doped TeO2-ZnO-Na2O (TZN) tellurite glass demonstrated as an ideal LDW OS medium. The glass is capable of generating molecule-like Ag-m(x+) nanoclusters with a broad emission band under laser irradiation, showcasing potential for 3D volumetric OS.
In situ constructing program-designed nanostructures via laser-direct-writing (LDW) has proved to be a reliable strategy for optical storage (OS). Herein, a kind of low-melting Ag+-doped TeO2-ZnO-Na2O (TZN) tellurite glass has been demonstrated as an ideal LDW OS medium. Microstructural and spectroscopic studies reveal the generation of molecule-like Ag-m(x+) nanoclusters featured with a broad emission band in the orange-red region upon laser irradiation. Probing the laser-glass interaction yields evidences of the spatial distribution of Ag species responsive to laser-induced thermoelastic pressure wave oscillation, as well as the heat-driven migration/aggregation of Ag species along the radial direction of the laser spot. Raman analyses disclose the loose network of TZN-glass convenient for Ag+ mobility and the increased network connectivity when Ag-m(x+) nanoclusters are precipitated out. Combined with the XPS result of Ag+ -> Ag-0 reduction, the possible formation mechanism of Ag nanoclusters stabilized in glass has been proposed. In a proof-of-concept experiment, 3D volumetric OS in the TZN glass has been demonstrated, showing optical data encoding/decoding in the form of characters and image patterns.
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