"

Cookies ussage consent

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

I agree, do not show this message again.

Application of porous SiOx layer as a template for calcium phosphate growth

E. PECHEVA1, L. PRAMATAROVA1, A. SZEKERES1,* , T. NIKOLOVA1, P. MONTGOMERY2

Affiliation

  1. Institute of Solid State Physics, Bulgarian Academy of Sciences, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria
  2. Institut d'Electronique du Solide et des Systemes (InESS), CNRS, 23 rue du Loess, 67037 Strasbourg, France

Abstract

Calcium phosphate layers were grown on vacuum evaporated SiOx layers by using a biomimetic approach (from an aqueous solution that resembles the ion compositions and concentrations in human blood plasma). Micro-Raman and Fourier transform infrared spectroscopy showed that the grown layer was calcium phosphate. Coherence probe microscopy revealed the formation of a white, inhomogeneous and rough layer with a peak-to-valley height and root mean square roughness of 16.4 and 5.4 μm, respectively. The layer reflection spectrum recorded by UV-Vis spectroscopy revealed low reflection and partial transparency in the visible region. From multiple-angle ellipsometric measurements at λ = 632.8 nm, a strong dependence of the refractive index and extinction coefficient on the angle of light incidence was established, due to density variations within the CaP layer..

Keywords

Thermally evaporated SiOx, Calcium phosphate, Biomedical applications.

Submitted at: Nov. 1, 2006
Accepted at: Jan. 15, 2007

Citation

E. PECHEVA, L. PRAMATAROVA, A. SZEKERES, T. NIKOLOVA, P. MONTGOMERY, Application of porous SiOx layer as a template for calcium phosphate growth, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 1, pp. 233-235 (2007)