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SAFE - Research project

Study of the biological behaviour of PVD thin film metallic glasses: effect of an ultrashort laser treatment

Post-doctoral fellow: Hugo BRUHIER

ABSTRACT

Résumé public du projet en anglais (150 Mots maximum)
Bulk metallic glasses (BMGs) have interested scientists since the 1960s, thanks to their amorphous structure giving them incredible mechanical and chemical properties. However, their synthesis is complex, which led to the development of thin film metallic glasses (TFMGs).
Deposited by PVD processes, these TFMGs have a much wider compositional range than BMGs, and the control of their microstructure is easier. The potential applications of these surfaces are numerous, and include the field of biology, in particular the bactericidal effects obtained by adding silver in binary Zr-Cu TFMGs. However, the addition of silver tends to decrease its corrosion resistance, which is prohibitive for biological applications.
This project aims at texturing the surface of these TFMGs by femtosecond laser, in order to modify their behaviour towards bacteria and cells. It would be possible to obtain biostatic surfaces, or both antibacterial and biocompatible for applications such as implants. Femtosecond laser irradiation creates Laser Induced Periodic Spatial Structure (LIPSS) on material’s surface, which are submicrometric ripples with a spatial period lower than the laser wavelength. The changes induced by femtosecond laser irradiation on TFMGs are presented, as well as their chemical, physical and biological properties.


 
PUBLICATIONS
  • N. Lebrun, F. Dupla, H. Bruhier, M. Prudnt, A. Borroto, C. Der Loughian, F. Bourquard, JM. Pelletier, M. Rousseau, JP. Colombier, JF. Pierson, F. Garrelie, P. Steyer, "Metallic glasses for biological applications and opportunities opened by laser surface texturing: A review", Applied Surface Science, 670, 2024, https://www.sciencedirect.com/science/article/pii/S0169433224013308


CONFERENCES
  • P. Steyer, et al., "How to functionalize PVD ZrCu-based thin film metallic glasses? Effect of an ultrashort laser surface treatment", Plathinium, Sept. 2023, Antibes, France
  • H. Bruhier, at al., "Changes in the wettability of femtosecond laser-textured Zr-Cu thin-film metallic glasses", 11th LIPSS Workshop, Sept. 2023, Madrid, Spain
  • H. Bruhier, et al., "Multiscale characterization of the wettability of thin film metallic glasses surfaces: Effect of a fs-laser treatment", EMRS Spring Meeting 2024, May 2024, Strasbourg, France
  • F. Dupla, M. Prudent, A. Borroto, C. Der-Loughian, L. Gremillard, F. Garrelie, F. Bourquard,  J.-P. Colombier, M. Rousseau, J.-F. Pierson, P. Steyer, "Influence of femtosecond laser surface texturing on the biological properties of  ZrCuAg thin film metallic glasses", EMRS Spring Meeting 2022 - Virtual Conference
  • H. Bruhier, et al., "Multiscale wetting properties of fs-laser textured thin film metallic glasses surfaces synthetized by magnetron sputtering process", PSE 2024, Sept. 2024, Erfurt, Germany
  • H. Bruhier, et al., "Multiscale characterization of the wettability of fs-laser textured thin film metallic glasses surfaces", COLA 2024, Oct. 2024, Hersonissos, Greece