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- W2883224276 abstract "Hierarchical structures on metallic implants can enhance the interaction between cells and implants and thus increase their biocompatibility. However, it is difficult to directly fabricate hierarchical structures on metallic implants. In this study, we used a simple one-step method, ultrasonic nanocrystal surface modification (UNSM), to fabricate hierarchical surface structures on a nickel-titanium (NiTi) alloy. During UNSM, a tungsten carbide ball hits metal surfaces at ultrasonic frequency. The overlapping of the ultrasonic strikes generates hierarchical structures with microscale grooves and embedded nanoscale wrinkles. Cell culture experiments showed that cells adhere better and grow more prolifically on the UNSM-treated samples. Compared with the untreated samples, the UNSM-treated samples have higher corrosion resistance. In addition, the surface hardness increased from 243 Hv to 296 Hv and the scratch hardness increased by 22%. Overall, the improved biocompatibility, higher corrosion resistance, and enhanced mechanical properties demonstrate that UNSM is a simple and effective method to process metallic implant materials." @default.
- W2883224276 created "2018-08-03" @default.
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- W2883224276 date "2018-12-01" @default.
- W2883224276 modified "2023-10-12" @default.
- W2883224276 title "Hierarchical structures on nickel-titanium fabricated by ultrasonic nanocrystal surface modification" @default.
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- W2883224276 doi "https://doi.org/10.1016/j.msec.2018.07.032" @default.
- W2883224276 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30274044" @default.
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