Activation of Hydroxyapatite Crystal Growth on the Surface of Biomimetic Synthetic Apatites through Electrical Polarization

Author(s):  
Simone Sprio ◽  
Gian Carlo Celotti ◽  
Elena Landi ◽  
Anna Tampieri
2005 ◽  
Vol 284-286 ◽  
pp. 521-524
Author(s):  
Simone Sprio ◽  
Gian Carlo Celotti ◽  
Elena Landi ◽  
Anna Tampieri

A series of synthetic apatites bulk samples, characterized by different atomic substitutions were polarized by field of 1 and 2 kV·cm-1 at 300 °C. The thermally stimulated depolarization currents (TSDC) were measured and the stored electric charge density evaluated. The recent development in the synthesis of non-stoichiometric HA powders, whose chemical composition resembles that of the natural bone, is promising for the realization of improved biomimetic implants for bone substitution; therefore, electrical polarization applied on the ceramic pieces could further enhance the already strong bioactivity of these materials. The depolarization processes in the various material were evaluated by the Arrhenius’ method and related with the corresponding chemical features; finally, SEM observations of some polarized samples immersed in SBF at 37 °C revealed a wide growth of HA particles within a few days in all the investigated materials.


Langmuir ◽  
2000 ◽  
Vol 16 (16) ◽  
pp. 6745-6749 ◽  
Author(s):  
S. Koutsopoulos ◽  
E. Dalas ◽  
N. Klouras

1988 ◽  
Vol 23 (9) ◽  
pp. 3202-3205 ◽  
Author(s):  
Masayuki Asada ◽  
Yoshinari Miura ◽  
Akiyoshi Osaka ◽  
Katsutoshi Oukami ◽  
Seishiro Nakamura

Langmuir ◽  
1996 ◽  
Vol 12 (11) ◽  
pp. 2853-2858 ◽  
Author(s):  
A. Zieba ◽  
G. Sethuraman ◽  
F. Perez ◽  
G. H. Nancollas ◽  
D. Cameron

2022 ◽  
Author(s):  
Hui Li ◽  
Zixue Su

(NH4)3FeF6 mesocrystalline octahedrons are formed by in-situ dissolution and reaction of anodic iron oxides, followed by a non-classical crystal growth process involving electrical polarization and subsequent alignment of primary (NH4)3FeF6...


2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Maria Teresa Valente ◽  
Eduardo Buozi Moffa ◽  
Karla Tonelli Bicalho Crosara ◽  
Yizhi Xiao ◽  
Thais Marchini de Oliveira ◽  
...  

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