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In-situ growth of Ca/P salt on Ti surface induced by femtosecond lasers in hydroxyapatite suspension |
Liang Chun-Yong(梁春永)a), Wang Hong-Shui(王洪水) a), Yang Yang(杨阳)b), Yang Jian-Jun(杨建军)b)†, Chen Gui-Feng(陈贵锋) a), and Li Chang-Yi(李长义)c) |
a School of Materials Science and Engineering, Hebei University of Technology, Tianjin 300130, China; b Institute of Modern Optics, Nankai University, Key Laboratory of Opto-electronic Information Science and Technology, Education Ministry of China, Tianjin 300071, China; c Stomatological Hospital, Tianjin Medical University, Tianjin 300070, China |
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Abstract Pure Ti plate surfaces are micro-ablated by femtosecond lasers in the ambience of hydroxyapatite suspension. It is found that three-stage hierarchical surface structures are produced with various laser energies. When the laser energy is 150 μJ, a lava-like structure with a distribution of nanoholes is dispersed evenly on the laser ablated surface. While in the case of 300 μJ, the grooves-and-islands micro-patterns covered with nanoparticles are generated on the surface. Remarkably, Ca/P based substances are revealed to firmly deposit on the micro-structured surfaces. More phosphate growth is seen for the higher laser energy. Discussions suggest that the additional elements deposition could be attributed to the chemical reaction of plasma related ions in the suspension and their subsequent crystallisation on the fresh surfaces of Ti plate due to the femtosecond laser ablation.
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Received: 17 December 2009
Revised: 26 February 2010
Accepted manuscript online:
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Fund: Project supported by the National Natural Science Foundation of China (Grants Nos. 50901029 and 10874092), the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20070055066), the Natural Science Foundation of Tianjin, China (Grant No. 09JCYBJC13900), the Natural Science Foundation of Hebei Province, China (Grant No. E2008000072), and Hebei Education Department Research Plan (Grant No. Z2008305). |
Cite this article:
Liang Chun-Yong(梁春永), Wang Hong-Shui(王洪水), Yang Yang(杨阳), Yang Jian-Jun(杨建军), Chen Gui-Feng(陈贵锋), and Li Chang-Yi(李长义) In-situ growth of Ca/P salt on Ti surface induced by femtosecond lasers in hydroxyapatite suspension 2010 Chin. Phys. B 19 094208
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