Laser-direct-writing of molecule-like Agmx+nanoclusters in transparent tellurite glass for 3D volumetric optical storage
| Autor: | Shisheng Lin, Yuansheng Wang, Renfu Li, Yaman Wu, Qiugui Huang, Hang Lin, Chuxin Wu, Ju Xu, Yao Cheng |
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| Rok vydání: | 2021 |
| Předmět: | |
| Zdroj: | Nanoscale. 13:19663-19670 |
| ISSN: | 2040-3372 2040-3364 |
| DOI: | 10.1039/d1nr05360d |
| Popis: | In-situ constructing the program-designed nanostructures via laser-direct-writing (LDW) has been proved to be a reliable strategy for optical storage (OS). Herein, it was demonstrated a kind of low-melting Ag+-doped TeO2-ZnO-Na2O (TZN) tellurite glass as ideal LDW OS medium. The microstructural and spectroscopic studies reveal the generation of molecular-like Agmx+ nanoclusters featured with broad emission band in the orange-red region upon laser irradiation. The probe of laser-glass interaction gives evidences on 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 laser spot. Raman analyses disclose the loose network of TZN-glass convenient for Ag+ mobility and the increased network connectivity when Agmx+ nanoclusters are precipitated out. Combined with the XPS result of Ag+→Ag0 reduction, the possible formation mechanism of Ag nanoclusters stabilized in glass is proposed. In a proof-of-experiment, the 3D volumetric OS in the TZN glass is demonstrated, showing optical data encoding/decoding in the form of characters and image patterns. |
| Databáze: | OpenAIRE |
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