Poh, Eng Tuan and Tan, Yung Zhen and Neo, Justin Boon Shuan and Ong, Chee How and Saroni, Azianty and Zhang, Zheng and Li, Jianhui and Goh, Boon Tong and Sow, Chorng Haur (2023) Multi-dimensional dynamic fluorescence readout from laser engineered In2O3 nanowire micropatterns. JOURNAL OF MATERIALS CHEMISTRY C, 11 (16). pp. 5271-5280. ISSN 2050-7526, DOI https://doi.org/10.1039/d2tc04449h.
Full text not available from this repository.Abstract
Laser-induced microscale reactions are an excellent means to obtain controllable, small-scale insights into nanomaterial properties. Importantly, the opportunity for a comprehensive understanding of the material's optical origins allows for refined engineering of material luminescence. Modifying an array of standing indium oxide (In2O3) nanowires with a focused laser beam, we report newfound yellow and blue fluorescence emanating from the sample. Evaluated through a broad range of laser conditions, the laser-induced yellow component was found to relate to oxygen inclusions, while the blue fluorescence overlayer originated from oxygen physisorption upon prolonged storage. Capitalizing on the versatility of the blue emission component under UV modulation, we demonstrate micropatterns with multiple layers of differentiated optical encryption features. The enhanced anti-counterfeiting capability allows improved complexity in an authentication process, involving the convergence of microscale patterning, dynamic color evolution and time-domain encoding as multilevel checkpoints in the verification process.
| Item Type: | Article |
|---|---|
| Funders: | NUS Resilience & Growth Postdoctoral Fellowship [R-144-000-471-281/A-0000065-65-00] |
| Uncontrolled Keywords: | Large-scale synthesis; Inn thin-films; Carbon nanotubes; Facile synthesis; Oxide; Photoluminescence; Defect; Nanostructures; Nanoparticles; Ultraviolet; |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 15 Jun 2024 03:49 |
| Last Modified: | 15 Jun 2024 03:49 |
| URI: | http://eprints.um.edu.my/id/eprint/38287 |
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