Bioactive glass–ceramic coatings prepared by pulsed laser deposition from RKKP targets (sol–gel vs melt-processing route)

Silicate (13-93) and borate (13-93-B3) bioactive glass coatings were successfully deposited on titanium using the nanosecond Pulsed Laser Deposition technique. The coatings’ microstructural characteristics, compositions and morphologies were examined by a number of physico-chemical techniques. The deposited coatings retain the same functional groups of the targets, are a few microns thick, amorphous, compact and crack free. Their surface is characterized by the presence of micrometric and nanometric particles. The surface topography, investigated by Atomic Force Microscopy, is characterized by spherical or ellipsoidal particles of the 0.2–3 μm size range for the 13-93 silicate bioactive glass film and of the 0.1–1 µm range for the 13-93-B3 borate bioactive glass coating. Equine adipose tissue-derived mesenchymal stem cells (ADMSCs) were applied for biological tests and the osteogenic differentiation activity of cells on the deposited coatings was studied after ADMSCs growth in osteogenic medium and staining with Alizarin Red. Cytocompatibility and osteogenic differentiation tests have shown that thin films retain the biocompatibility properties of the target silicate and borate glass, respectively. On the other hand, no antibacterial activity of the borate glass films was observed, suggesting that ion doping is advisable to inhibit bacterial growth on the surface of borate glass thin films.

Download Full-text

The role of the reactive atmosphere in pulsed laser deposition of bioactive glass films

Thin Solid Films ◽

10.1016/j.tsf.2003.11.258 ◽

2004 ◽

Vol 453-454 ◽

pp. 224-228 ◽

Cited By ~ 29

Author(s):

S Liste ◽

J Serra ◽

P González ◽

J.P Borrajo ◽

S Chiussi ◽

...

Keyword(s):

Bioactive Glass ◽

Pulsed Laser Deposition ◽

Pulsed Laser ◽

Laser Deposition ◽

Glass Films

Download Full-text

Heterogeneous Sol-Gel Systems – Derived Ceramics

Advances in Science and Technology ◽

10.4028/www.scientific.net/ast.63.131 ◽

2010 ◽

Vol 63 ◽

pp. 131-140 ◽

Cited By ~ 1

Author(s):

Olga A. Shilova

Keyword(s):

Glass Ceramic ◽

Mechanical Characteristics ◽

Sol Gel ◽

Ceramic Coatings ◽

Hybrid Coatings ◽

Properties Of Coatings ◽

Glass Ceramic Coatings ◽

Molecular Compounds ◽

Filler Dispersity ◽

Physical And Mechanical Characteristics

Heterogeneous sol-gel systems (suspensions), synthesized by mixing sols and fillers of various dispersity (oxides, minerals, etc.), are successfully used to prepare glass-ceramic coatings. Sol composition (precursor, catalyst, solvent, dopants), filler dispersity and a homogenization mode for obtained suspensions essentially influence the properties of coatings formed. Here ways of the control of properties of heterogeneous sol-gel systems (by using various dopants, additives of organic low- and high-molecular compounds, as well as ultrasound) to reach set electro-physical and mechanical characteristics of coatings are considered in details. A number of examples of applications of glass-ceramic and hybrid coatings as well as ‘skin’ - layers are resulted.

Download Full-text

Synthesis of Complex-oxide Nanorods via Pulsed-laser Deposition

MRS Proceedings ◽

10.1557/proc-1256-n10-02 ◽

2010 ◽

Vol 1256 ◽

Author(s):

John E Mathis ◽

Gyula Eres ◽

Claudia Cantoni ◽

Kyunghoon Kim ◽

Hans Christen

Keyword(s):

Pulsed Laser Deposition ◽

Sol Gel ◽

Pulsed Laser ◽

Complex Oxides ◽

Complex Oxide ◽

Laser Deposition ◽

Complex Structures ◽

Layer By Layer ◽

Oxide Nanorods ◽

Layer Control

AbstractNanorods composed of complex oxides have been synthesized using hydrothermal and sol-gel methods, but pulsed-laser deposition (PLD) provides precise, layer-by-layer control of growth, and is the method of choice for synthesizing complex structures. However, producing complex-oxide nanorods by PLD has proved elusive.Here we report on our efforts to produce nanorods composed of the best-understood complex oxide, strontium titanate (STO). The results suggest it is indeed possible to produce STO nanorods via PLD by using a template of MgO nanorods.

Download Full-text