Surface hydrophilicity improvement of titanium(Ti)is of great significance for the applications of the important biomaterial.In this study,efficient hydrophilicity on the Ti surface is improved by an air plasma jet ge...Surface hydrophilicity improvement of titanium(Ti)is of great significance for the applications of the important biomaterial.In this study,efficient hydrophilicity on the Ti surface is improved by an air plasma jet generated by a microhollow cathode discharge(MHCD)geometry.Elementary discharge aspects of the plasma jet and surface characteristics of the Ti surface are investigated by varying dissipated power(P_(d)).The results show that the plasma jet can operate in a pulsed mode or a continuous mode,depending on P_(d).The plume length increases with Pdand air flow rate increasing.By optical emission spectroscopy,plasma parameters as a function of Pdare investigated.After plasma treatment,water contact angel(WCA)of the Ti sample decreases to a minimum value of 15°with Pdincreasing.In addition,the surface topography,roughness,and content of chemical composition are investigated by scanning electron microscopy(SEM),atomic force microscopy(AFM),and x-ray photoelectron spectroscopy(XPS)with Pdincreasing.The results show that Ti-O bond and O-H group on the Ti surface are beneficial to the improvement of the hydrophilicity of Ti surface.展开更多
基金Project supported by the National Natural Science Foundation of China(Grant Nos.51977057 and 11875121)the Natural Science Foundation of Hebei Province,China(Grant Nos.A2020201025 and A2022201036)+2 种基金the Natural Science Interdisciplinary Research Program of Hebei University,China(Grant Nos.DXK201908 and DXK202011)the Postgraduate’s Innovation Fund Project of Hebei Province,China(Grant Nos.CXZZBS2019023 and CXZZBS2019029)the Post-graduate’s Innovation Fund Project of Hebei University,China(Grant Nos.HBU2021ss063,HBU2021bs011,and HBU2022bs004)。
文摘Surface hydrophilicity improvement of titanium(Ti)is of great significance for the applications of the important biomaterial.In this study,efficient hydrophilicity on the Ti surface is improved by an air plasma jet generated by a microhollow cathode discharge(MHCD)geometry.Elementary discharge aspects of the plasma jet and surface characteristics of the Ti surface are investigated by varying dissipated power(P_(d)).The results show that the plasma jet can operate in a pulsed mode or a continuous mode,depending on P_(d).The plume length increases with Pdand air flow rate increasing.By optical emission spectroscopy,plasma parameters as a function of Pdare investigated.After plasma treatment,water contact angel(WCA)of the Ti sample decreases to a minimum value of 15°with Pdincreasing.In addition,the surface topography,roughness,and content of chemical composition are investigated by scanning electron microscopy(SEM),atomic force microscopy(AFM),and x-ray photoelectron spectroscopy(XPS)with Pdincreasing.The results show that Ti-O bond and O-H group on the Ti surface are beneficial to the improvement of the hydrophilicity of Ti surface.
