Laser-beam powder bed fusion followed by laser-induced periodic surface structuring leads to antibacterial properties
The antibacterial properties of nanostructured surfaces depend on their micro/nanostructure size and wettability. Previous studies have demonstrated that laser-induced periodic surface structures (LIPSSs) can inhibit the adhesion of bacteria to the surface, making LIPSSs a promising approach to enha...
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| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-06-01
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| Series: | Materials & Design |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127525004988 |
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| Summary: | The antibacterial properties of nanostructured surfaces depend on their micro/nanostructure size and wettability. Previous studies have demonstrated that laser-induced periodic surface structures (LIPSSs) can inhibit the adhesion of bacteria to the surface, making LIPSSs a promising approach to enhance the antibacterial performance of biomedical devices. Many medical devices have been fabricated via laser-beam powder bed fusion (PBF-LB) technology. Integrating LIPSSs with PBF-LB could further improve the antibacterial properties in medical devices. Unlike prior research that focused solely on the antibacterial properties of LIPSSs, we propose a novel method to fabricate a combined PBF-LB + LIPSS surface. In this approach, the workpiece is first fabricated using the PBF-LB process, followed by a picosecond laser irradiation of the side surface to generate LIPSSs. Experimental results indicate that the PBF-LB + LIPSSs significantly inhibits the attachment of Escherichia coli. This finding suggests that the method of PBF-LB + LIPSS has excellent potential for biomedical applications, offering enhanced antibacterial performance. |
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| ISSN: | 0264-1275 |