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  Journal of Nanoscience Letters. Volume 1, Issue 2 (2011) pp. 116-122
  Research Article
In-vitro hydroxyapatite formation on amorphous titania thin film prepared by an electrostatic spraying route
  S. D. Kima, K. S. Hwangb,*  
a Department of Quality Non-Destructive Testing, Seoul Sanggye Vocational School, 771-2 Sanggye-dong Nowon-gu, Seoul 139-831, Republic of Korea
b Department of Biomedical Engineering, Nambu University, 864-1 Wolgye-dong, Gwangsan-gu Gwangju 506-824, Republic of Korea

  A cost-effective method, i.e., electrostatic spray deposition, has been used in this study to prepare amorphous titania thin films on silicon wafer substrates. Final annealing was done at 400?C for 30 min in air. The hydroxyapatite - forming ability of finally annealed titania thin films at relatively low temperature has been investigated by immersion in an inorganic simulated body fluid with ion concentrations that were almost equal to those of human blood plasma for time periods of 1, 5, 15, 30, and 45days. At each time interval, the titania coatings were analyzed using X-ray diffraction analysis, field emission - scanning electron microscope, inductively coupled plasma atomic emission spectroscopy, energy dispersive X-ray spectroscope and Fourier transform infrared. Titania thin film with an amorphous structure induced hydroxyapatite formation on their surfaces after immersion in simulated body fluid for 15 days.
  Electrostatic spray deposition; Titania thin film; Hydroxyapatite  

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