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Proceedings Paper

A novel laser-liquid-solid interaction process for hydroxyapatite formation on porous silicon
Author(s): Liliana Pramatarova; Emilia Pecheva; Doriana Dimova-Malinovska; Radina Presker; Martin Stutzmann; U. Schwarz; R. Kniep
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Paper Abstract

The mechanism of hydroxyapatite (HA, Ca10(PO4)6(OH)2) growth on the surface of porous silicon (PS) was examined. PS layers were prepared by electrochemical or chemical etching of n-type Si with (111) orientation, and p-type Si with (100) orientation. HA growth was induced by two methods: a simple soaking process in a simulated body fluid (SBF) and a novel Laser-Liquid-Solid Interaction (LLSI) process which allowed interaction between a scanning laser beam and the PS substrate immersed in the SBF. The grown layers were investigated by light microscopy, electron microprobe analysis, Raman spectroscopy and X-ray diffraction. Differently doped Si substrates with different crystallographic orientation and electrical resistivity were used and their effect on the HA growth, as well as the effect of the laser energy were examined.

Paper Details

Date Published: 22 April 2005
PDF: 5 pages
Proc. SPIE 5830, 13th International School on Quantum Electronics: Laser Physics and Applications, (22 April 2005); doi: 10.1117/12.618423
Show Author Affiliations
Liliana Pramatarova, Institute of Solid State Physics (Bulgaria)
Emilia Pecheva, Institute of Solid State Physics (Bulgaria)
Doriana Dimova-Malinovska, Central Lab. of Solar Energy and New Energy Sources (Bulgaria)
Radina Presker, Walter Schottky Institute, Technical Univ. (Germany)
Martin Stutzmann, Walter Schottky Institute, Technical Univ. (Germany)
U. Schwarz, Max Planck Institute for Chemical Physics of Solids (Germany)
R. Kniep, Max Planck Institute for Chemical Physics of Solids (Germany)


Published in SPIE Proceedings Vol. 5830:
13th International School on Quantum Electronics: Laser Physics and Applications
Peter A. Atanasov; Sanka V. Gateva; Lachezar A. Avramov; Alexander A. Serafetinides, Editor(s)

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