Rapidly Resorbable and Spongiosa-Like Dicalcium Potassium Sodium Phosphate Glass-Ceramics for Three-Dimensional Cultivation of Human Osteoblast-Like Cells

2001 ◽  
Vol 218-220 ◽  
pp. 233-236
Author(s):  
Georg Berger ◽  
Y. Açil ◽  
S. Jepsen ◽  
A. Spitzer
Keyword(s):  
Phosphate Glass ◽  
Sodium Phosphate ◽  
Three Dimensional ◽  
Glass Ceramics ◽  
Human Osteoblast ◽  
Potassium Sodium

In Vivo Tests of a Highly Porous Rapidly Resorbable Dicalcium Potassium Sodium Phosphate Glass-Ceramics

2001 ◽  
Vol 218-220 ◽  
pp. 307-310 ◽  
Author(s):  
Ulrich Gross ◽  
Ch. Müller-Mai ◽  
Ch. Voigt ◽  
Georg Berger ◽  
A. Spitzer
Keyword(s):  
Phosphate Glass ◽  
Sodium Phosphate ◽  
Glass Ceramics ◽  
Potassium Sodium ◽  
In Vivo Tests ◽  
Highly Porous

Production and Characterization of Hydroxyapatite/Niobo Phosphate Glass Scaffold

2013 ◽  
Vol 587 ◽  
pp. 128-131 ◽  
Author(s):  
Daniel Navarro da Rocha ◽  
Leila Rosa de Oliveira Cruz ◽  
João Luiz do Prado Neto ◽  
Nadia Mohammed Elmassalami Ayad ◽  
Luciano de Andrade Gobbo ◽  
...  
Keyword(s):  
Phosphate Glass ◽  
Bone Repair ◽  
3D Structure ◽  
Three Dimensional ◽  
Glass Ceramics ◽  
Phosphate Glasses ◽  
Porous Hydroxyapatite ◽  
Porous Bodies ◽  
Heat Treated

The present study concerns the production and characterization of porous hydroxyapatite/niobo-phosphate glass ceramics to be used for bone repair. The scaffolds were produced by hydrothermal deposition of monetite on polyurethane sponge substrates, further converted to hydroxyapatite in an alkali solution. After heat treatment, elimination of the organic sponge provides a three-dimensional (3D) structure. Niobo-phosphate glasses were added to the heat treated struts and the scaffolds were sintered. The porous bodies were characterized by field-emission gun scanning electron microscope (FEG-SEM) with energy-dispersive X-ray spectroscopy (EDS).

scholarly journals Luminescence of SiO2-BaF2:Tb3+, Eu3+ Nano-Glass-Ceramics Made from Sol–Gel Method at Low Temperature

Nanomaterials ◽  
2022 ◽  
Vol 12 (2) ◽  
pp. 259
Author(s):  
Natalia Pawlik ◽  
Barbara Szpikowska-Sroka ◽  
Tomasz Goryczka ◽  
Ewa Pietrasik ◽  
Wojciech A. Pisarski
Keyword(s):  
Sol Gel ◽  
Three Dimensional ◽  
Glass Ceramics ◽  
Emission Spectra ◽  
Scanning Calorimetry ◽  
Light Emitting ◽  
Co Doping ◽  
Dsc Measurements ◽  
Decay Times

The synthesis and characterization of multicolor light-emitting nanomaterials based on rare earths (RE3+) are of great importance due to their possible use in optoelectronic devices, such as LEDs or displays. In the present work, oxyfluoride glass-ceramics containing BaF2 nanocrystals co-doped with Tb3+, Eu3+ ions were fabricated from amorphous xerogels at 350 °C. The analysis of the thermal behavior of fabricated xerogels was performed using TG/DSC measurements (thermogravimetry (TG), differential scanning calorimetry (DSC)). The crystallization of BaF2 phase at the nanoscale was confirmed by X-ray diffraction (XRD) measurements and transmission electron microscopy (TEM), and the changes in silicate sol–gel host were determined by attenuated total reflectance infrared (ATR-IR) spectroscopy. The luminescent characterization of prepared sol–gel materials was carried out by excitation and emission spectra along with decay analysis from the 5D4 level of Tb3+. As a result, the visible light according to the electronic transitions of Tb3+ (5D4 → 7FJ (J = 6–3)) and Eu3+ (5D0 → 7FJ (J = 0–4)) was recorded. It was also observed that co-doping with Eu3+ caused the shortening in decay times of the 5D4 state from 1.11 ms to 0.88 ms (for xerogels) and from 6.56 ms to 4.06 ms (for glass-ceramics). Thus, based on lifetime values, the Tb3+/Eu3+ energy transfer (ET) efficiencies were estimated to be almost 21% for xerogels and 38% for nano-glass-ceramics. Therefore, such materials could be successfully predisposed for laser technologies, spectral converters, and three-dimensional displays.

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