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Bioactivity and cytocompatibility of silicon wafers treated by water
Author(s) -
Niu Yaran,
Liu Xuanyong,
Ding Chuanxian
Publication year - 2007
Publication title -
journal of biomedical materials research part a
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.849
H-Index - 150
eISSN - 1552-4965
pISSN - 1549-3296
DOI - 10.1002/jbm.a.31419
Subject(s) - wafer , materials science , simulated body fluid , silicon , apatite , fourier transform infrared spectroscopy , x ray photoelectron spectroscopy , scanning electron microscope , chemical engineering , nanotechnology , composite material , analytical chemistry (journal) , metallurgy , chemistry , organic chemistry , engineering
A range of bioactive ceramics can induce bone‐like apatite to deposit on their surface in simulated body fluid (SBF). In this work, the silicon wafer was treated using deionized water to improve its bioactivity. The morphology and chemical composition of the treated silicon wafer was examined using Fourier transform infrared spectroscopy, atomic force microscopy and X‐ray photoelectron spectroscopy. Field emission scanning electron microscopy was used to observe the surface morphologies of silicon wafers soaked in SBF. The results indicated that a hydrated sub‐oxide film having SiOH groups formed on the surface of the silicon wafer after the water treatment. The amount of SiOH groups increased with raising the treatment temperature or prolonging the immersion time. Apatite was deposited on the surface of water‐treated silicon wafers immersed in SBF. The apatite deposition was correlated with the amount of SiOH groups. Human mesenchymal stem cells cultured on the surface of the water‐treated silicon wafers showed good adhesion and spread, indicating that the cytocompatibility of silicon wafer was enhanced by this water treatment. © 2007 Wiley Periodicals, Inc. J Biomed Mater Res, 2007