Fabrication of Multiscale and Periodically Structured Zirconia Surfaces Using Direct Laser Interference Patterning
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
The functionalization of zirconia surfaces by accurate and fast printing of periodical patterns embedding sub-micrometric features is of great interest to many engineering fields and is yet to be explored. This study aims to assess the influence of the Direct Laser Interference Patterning processing parameters on the morphology and microstructure of zirconia surfaces using a 532 nm 10 ps-pulsed laser source. Well-defined linear structures with a period of 3 µm are successfully produced. Depending on the laser parameters, the structures are developed at or below the surface level, with higher depths (≈1 µm) being seen for increasing values of laser fluence and pulse overlap. Line-like hierarchical structures with smaller interference spatial structures (3 µm period) and higher secondary structures with different periods (18, 15, and 12 µm) and heights (7, 5, and 3 µm, respectively) are also obtained on zirconia surface. Ablated regions presented few traces of molten material, nano-droplets, and sub-micrometric (<1 µm) pores, while no (sub) micrometric cracks are detected. A slight amount of tetragonal to monoclinic phase transformation (≈5%) is detected by X-ray diffractometry. A processability map for ps-laser processing of zirconia is proposed based on the experimental data.
Details
Original language | English |
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Article number | 2408949 |
Number of pages | 13 |
Journal | Advanced functional materials |
Volume | 34 |
Issue number | 49 |
Early online date | Sept 2024 |
Publication status | Published - 18 Sept 2024 |
Peer-reviewed | Yes |
External IDs
Scopus | 85204293017 |
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Keywords
ASJC Scopus subject areas
Keywords
- direct laser interference patterning, hierarchical structures, surface structuring, ultra-short pulsed laser, zirconia