Cicada-inspired fluoridated hydroxyapatite nanostructured surfaces synthesized by electrochemical additive manufacturing
| Autor: | Menghao Wang, Karekin D. Esmeryan, Jianming Zhao, Bao Qian, Xiong Lu, Qun Wang, Fuzeng Ren, Kefeng Wang, Zhaoyang Li, Xiang Ge |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Fluoridated hydroxyapatite chemistry.chemical_element Nanotechnology 02 engineering and technology 010402 general chemistry Electrochemistry 01 natural sciences Electrochemical additive manufacturing (ECAM) Crystallinity Nanostructured surfaces lcsh:TA401-492 General Materials Science Nanopillar Mechanical Engineering 021001 nanoscience & nanotechnology 0104 chemical sciences Cicada-inspired Non-antibiotic antibacterial chemistry Mechanics of Materials Biomimetic lcsh:Materials of engineering and construction. Mechanics of materials Fluoridated hydroxyapatite (FHA) 0210 nano-technology Titanium |
| Zdroj: | Materials & Design, Vol 193, Iss, Pp 108790-(2020) |
| ISSN: | 0264-1275 |
| Popis: | Recently, the cicada-inspired nanostructured surfaces have attracted much interest because they possess remarkable bactericidal ability. However, Gram-positive bacteria are less damageable by the nanopillar structure of a cicada wing surface compared to Gram-negative species. To overcome this shortcoming, fluoridated hydroxyapatite (FHA) is employed owing to its effective antibacterial ability against both Gram-negative and Gram-positive bacteria. Here, we design a novel potential antibacterial surface by combining the cicada wing-like nanopillar structure and the FHA together to potentially exert the advantages of physical and chemical antibacterial strategies simultaneously for battling the antibiotic-resistant pathogenic bacteria more effectively. Cicada-inspired FHA nanostructured surfaces have been successfully fabricated on acid-etched titanium (AETi) plates using an electrochemical additive manufacturing (ECAM) method for the first time. The as-prepared FHA nanopillar array consists of close-packed individual nanopillars with diameters, heights, and aspect ratios of ~65–95 nm, ~380–510 nm, and ~4.5–7.5, respectively. The chemical composition of the FHA nanopillar array is similar to that of the Ca10(PO4)6(OH)F. Individual FHA nanopillars possess high crystallinity, long-range regularity, and flaw-free lattices with the [0001] orientation. Our new, cost-effective, and time-saving method for fabricating cicada-inspired FHA nanostructured surfaces could potentially endow orthopedic and dental implants with enhanced antibacterial performance for biomedical applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect