Journal
APPLIED SCIENCES-BASEL
Volume 12, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/app12073516
Keywords
calcium phosphate glass; bio-resorbability; copper ions; infrared nanosecond laser; surface texturing; micro-protrusion
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Funding
- Politecnico di Torino through the Interdepartmental Center PhotoNext
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This study introduces an infrared nanosecond laser modification technique that can effectively control the surface texture of bioresorbable calcium phosphate glass and provide new possibilities for the application of metal-doped bioglasses in the biological field.
The surface modification of bioactive glasses significantly impacts their performance for in-vivo biomedical applications. An affordable nanosecond pulsed laser surface-modification technique would provide great flexibility in applications such as cell scaffolding and fouling/anti-fouling engineered surfaces. This study reports on an infrared nanosecond laser modification technique we developed and applied to a Cu-doped bioresorbable calcium phosphate glass. With this technique, clean micro-protrusion features could be produced. By tuning the laser parameters such as the laser scan speed and average power, the width and height of the formed protrusions could be controlled. Finally, optimal laser parameters were defined to obtain complex surface textures without significant damage or thermal-stress-induced cracks. These results could provide effective aid for the affordable, fast, and selective surface texturing of metal-doped bioglasses, opening new possibilities in their application in the biological field.
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