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This study first investigates the biocompatibility of self-organized TaOx nanotube arrays with different nanotube diameters fabricated by electrochemical anodization. All as-anodized TaOx nanotubes were identified to be an amorphous phase. The transition in surface wettability with TaOx nanotube diameters can be explained based on Wenzel’s model in terms of geometric roughness. In vitro biocompatibility...
This work reports on the diameter-sensitive biocompatibility of anodic TiO2 nanotubes with different nanotube diameters grown by a self-ordering process and subsequently treated with supercritical CO2 (ScCO2) fluid. We find that highly hydrophilic as-grown TiO2 nanotubes become hydrophobic after the ScCO2 treatment but can effectively recover their surface wettability under UV light irradiation as...
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