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  • Küçük Resim
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    Characterization and investigation of properties of copper nanoparticle coated TiO2 nanotube surfaces on Ti6Al4V alloy
    (Elsevier Ltd, 2022) Durdu, Salih; Tosun, Sergen; Yalçın, Emine; Cavuşoğlu, Kültigin; Altınkök, Atılgan; Sağcan, Hasan; Yurtsever, İlknur; Usta, Metin
    In this work, to investigate surface, corrosion and in vitro biological properties of the CuNPs-coated nanotube surfaces, antibacterial, bioactive and biocompatible nanoparticle-coated nanotube surfaces were produced on Ti6Al4V alloys by combined anodic oxidation (AO) and electrodeposition (ED) techniques for implant applications. All surfaces were characterized by SEM, EDX-mapping and -area, XRD, AFM and contact angle measurement techniques. The electrochemical and biological properties such as antibacterial activities, protein adsorption, ALP activity, hemolytic activity and cell viability of the surfaces were investigated in detail. Electrochemical corrosion resistance of CuNPs-coated nanotube surfaces were enhanced respect to uncoated Ti6Al4V alloy under simulated body fluid (SBF) conditions. Antibacterial properties, cell viability and ALP activity of CuNPs-coated nanotube surfaces were improved with compared to uncoated Ti6Al4V alloys. In addition, protein adsorption and hemolytic activity of CuNPs-coated nanotube surfaces were reduced. This work indicates a potential to precisely fabricate an antibacterial, bioactive and biocompatible CuNPs-coated nanotube surfaces on Ti6Al4V to fulfill orthopedic and dental implant needs by using combined AO and ED processes.
  • Küçük Resim
    Öğe
    Surface characterization, electrochemical properties and in vitro biological properties of Zn-deposited TiO2 nanotube surfaces
    (Nature Research, 2023) Durdu, Salih; Cihan, Gizem; Yalçın, Emine; Çavuşoğlu, Kültigin; Altınkök, Atılgan; Sağcan, Hasan; Yurtsever, İlknur; Usta, Metin
    In this work, to improve antibacterial, biocompatible and bioactive properties of commercial pure titanium (cp-Ti) for implant applications, the Zn-deposited nanotube surfaces were fabricated on cp-Ti by using combined anodic oxidation (AO) and physical vapor deposition (PVD-TE) methods. Homogenous elemental distributions were observed through all surfaces. Moreover, Zn-deposited surfaces exhibited hydrophobic character while bare Ti surfaces were hydrophilic. Due to the biodegradable behavior of Zn on the nanotube surface, Zn-deposited nanotube surfaces showed higher corrosion current density than bare cp-Ti surface in SBF conditions as expected. In vitro biological properties such as cell viability, ALP activity, protein adsorption, hemolytic activity and antibacterial activity for Gram-positive and Gram-negative bacteria of all surfaces were investigated in detail. Cell viability, ALP activity and antibacterial properties of Zn-deposited nanotube surfaces were significantly improved with respect to bare cp-Ti. Moreover, hemolytic activity and protein adsorption of Zn-deposited nanotube surfaces were decreased. According to these results; a bioactive, biocompatible and antibacterial Zn-deposited nanotube surfaces produced on cp-Ti by using combined AO and PVD techniques can have potential for orthopedic and dental implant applications.