中国物理B ›› 2023, Vol. 32 ›› Issue (8): 85202-085202.doi: 10.1088/1674-1056/acbde9

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Efficient hydrophilicity improvement of titanium surface by plasma jet in micro-hollow cathode discharge geometry

Peng-Ying Jia(贾鹏英)1, Han-Xiao Jia(贾焓潇)1, Jun-Xia Ran(冉俊霞)1, Kai-Yue Wu(吴凯玥)2, Jia-Cun Wu(武珈存)2, Xue-Xia Pang(庞学霞)1, and Xue-Chen Li(李雪辰)1,2,†   

  1. 1. College of Physics Science & Technology, Hebei University, Baoding 071002, China;
    2. Institute of Life Science & Green Development, Hebei University, Baoding 071002, China
  • 收稿日期:2022-12-02 修回日期:2023-02-15 接受日期:2023-02-22 发布日期:2023-07-14
  • 通讯作者: Xue-Chen Li E-mail:plasmalab@126.com,xuechenli@126.com
  • 基金资助:
    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), the Natural Science Interdisciplinary Research Program of Hebei University, China (Grant Nos.DXK201908 and DXK202011), the Post-graduate's Innovation Fund Project of Hebei Province, China (Grant Nos.CXZZBS2019023 and CXZZBS2019029), and the Post-graduate's Innovation Fund Project of Hebei University, China (Grant Nos.HBU2021ss063, HBU2021bs011, and HBU2022bs004).

Efficient hydrophilicity improvement of titanium surface by plasma jet in micro-hollow cathode discharge geometry

Peng-Ying Jia(贾鹏英)1, Han-Xiao Jia(贾焓潇)1, Jun-Xia Ran(冉俊霞)1, Kai-Yue Wu(吴凯玥)2, Jia-Cun Wu(武珈存)2, Xue-Xia Pang(庞学霞)1, and Xue-Chen Li(李雪辰)1,2,†   

  1. 1. College of Physics Science & Technology, Hebei University, Baoding 071002, China;
    2. Institute of Life Science & Green Development, Hebei University, Baoding 071002, China
  • Received:2022-12-02 Revised:2023-02-15 Accepted:2023-02-22 Published:2023-07-14
  • Contact: Xue-Chen Li E-mail:plasmalab@126.com,xuechenli@126.com
  • Supported by:
    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), the Natural Science Interdisciplinary Research Program of Hebei University, China (Grant Nos.DXK201908 and DXK202011), the Post-graduate's Innovation Fund Project of Hebei Province, China (Grant Nos.CXZZBS2019023 and CXZZBS2019029), and the Post-graduate's Innovation Fund Project of Hebei University, China (Grant Nos.HBU2021ss063, HBU2021bs011, and HBU2022bs004).

摘要: 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 micro-hollow cathode discharge (MHCD) geometry. Elementary discharge aspects of the plasma jet and surface characteristics of the Ti surface are investigated by varying dissipated power (Pd). The results show that the plasma jet can operate in a pulsed mode or a continuous mode, depending on Pd. The plume length increases with Pd and air flow rate increasing. By optical emission spectroscopy, plasma parameters as a function of Pd are investigated. After plasma treatment, water contact angel (WCA) of the Ti sample decreases to a minimum value of 15° with Pd increasing. 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 Pd increasing. 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.

关键词: plasma jet, plasma treatment, plasma parameters, discharge aspects

Abstract: 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 micro-hollow cathode discharge (MHCD) geometry. Elementary discharge aspects of the plasma jet and surface characteristics of the Ti surface are investigated by varying dissipated power (Pd). The results show that the plasma jet can operate in a pulsed mode or a continuous mode, depending on Pd. The plume length increases with Pd and air flow rate increasing. By optical emission spectroscopy, plasma parameters as a function of Pd are investigated. After plasma treatment, water contact angel (WCA) of the Ti sample decreases to a minimum value of 15° with Pd increasing. 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 Pd increasing. 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.

Key words: plasma jet, plasma treatment, plasma parameters, discharge aspects

中图分类号:  (Other gas discharges)

  • 52.80.Tn
52.77.Bn (Etching and cleaning) 52.70.Kz (Optical (ultraviolet, visible, infrared) measurements) 52.50.Dg (Plasma sources)