Fabrication of Multiscale and Periodically Structured Zirconia Surfaces Using Direct Laser Interference Patterning

Research output: Contribution to journalResearch articleContributedpeer-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 languageEnglish
Article number2408949
Number of pages13
JournalAdvanced functional materials
Volume34
Issue number49
Early online dateSept 2024
Publication statusPublished - 18 Sept 2024
Peer-reviewedYes

External IDs

Scopus 85204293017

Keywords

Keywords

  • direct laser interference patterning, hierarchical structures, surface structuring, ultra-short pulsed laser, zirconia