Reduced bacterial adhesion on zirconium-based bulk metallic glasses by femtosecond laser nanostructuring

As high-performing materials, bulk metallic glasses have attracted widespread attention for biomedical applications. Herein, the bacterial adhesion properties of femtosecond laser-nanostructured surfaces of four types of zirconium-based bulk metallic glasses are assessed. Laser-induced periodical su...

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Published inProceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine Vol. 234; no. 4; p. 387
Main Authors Du, Cezhi, Wang, Chengyong, Zhang, Tao, Yi, Xin, Liang, Jianyi, Wang, Hongjian
Format Journal Article
LanguageEnglish
Published England 01.04.2020
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Abstract As high-performing materials, bulk metallic glasses have attracted widespread attention for biomedical applications. Herein, the bacterial adhesion properties of femtosecond laser-nanostructured surfaces of four types of zirconium-based bulk metallic glasses are assessed. Laser-induced periodical surface structures and nanoparticle structures were fabricated by femtosecond laser irradiation under different energy intensities (0.23 and 2.3 J/mm ). Surface topography, roughness, wettability, and surface energy were investigated after femtosecond laser irradiation and the surface bacterial adhesion properties were explored using and as respective representatives of Gram-negative and Gram-positive bacteria. 4',6-Diamidino-2-phenylindole fluorescence staining was used to characterize and assess the bacterial surface coverage rate. The cytotoxicity of polished and laser-nanostructured surfaces was investigated using MC3T3-E cells. The obtained results demonstrate that femtosecond laser surface nanostructuring retained the amorphous structure of zirconium-based bulk metallic glasses and led to an obvious decrease in bacterial adhesion compared with polished surfaces. The inhibition of bacterial adhesion on laser-induced periodical surface structures was greater than on nanostructured surfaces after 24 h of bacterial incubation. In addition, femtosecond laser nanostructuring did not have an apparent effect on the cytotoxicity of zirconium-based bulk metallic glasses.
AbstractList As high-performing materials, bulk metallic glasses have attracted widespread attention for biomedical applications. Herein, the bacterial adhesion properties of femtosecond laser-nanostructured surfaces of four types of zirconium-based bulk metallic glasses are assessed. Laser-induced periodical surface structures and nanoparticle structures were fabricated by femtosecond laser irradiation under different energy intensities (0.23 and 2.3 J/mm ). Surface topography, roughness, wettability, and surface energy were investigated after femtosecond laser irradiation and the surface bacterial adhesion properties were explored using and as respective representatives of Gram-negative and Gram-positive bacteria. 4',6-Diamidino-2-phenylindole fluorescence staining was used to characterize and assess the bacterial surface coverage rate. The cytotoxicity of polished and laser-nanostructured surfaces was investigated using MC3T3-E cells. The obtained results demonstrate that femtosecond laser surface nanostructuring retained the amorphous structure of zirconium-based bulk metallic glasses and led to an obvious decrease in bacterial adhesion compared with polished surfaces. The inhibition of bacterial adhesion on laser-induced periodical surface structures was greater than on nanostructured surfaces after 24 h of bacterial incubation. In addition, femtosecond laser nanostructuring did not have an apparent effect on the cytotoxicity of zirconium-based bulk metallic glasses.
Author Du, Cezhi
Yi, Xin
Liang, Jianyi
Wang, Hongjian
Wang, Chengyong
Zhang, Tao
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  surname: Wang
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  organization: School of Electromechanical Engineering, Guangdong University of Technology, Guangzhou, China
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Keywords nanostructure
Bacterial adhesion
bulk metallic glass
femtosecond laser
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Snippet As high-performing materials, bulk metallic glasses have attracted widespread attention for biomedical applications. Herein, the bacterial adhesion properties...
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StartPage 387
SubjectTerms 3T3 Cells
Animals
Bacterial Adhesion - drug effects
Glass - chemistry
Lasers
Mice
Nanostructures
Surface Properties
Zirconium - chemistry
Zirconium - pharmacology
Title Reduced bacterial adhesion on zirconium-based bulk metallic glasses by femtosecond laser nanostructuring
URI https://www.ncbi.nlm.nih.gov/pubmed/31884888
Volume 234
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