Pulsed Laser Deposition and Biocompatibility of Titanium Nitride Coatings

Author(s):  
Talisha M. Haywood ◽  
Kwadwo M. Darkwa ◽  
Ram K. Gupta ◽  
Dhananjay Kumar

TiN thin films were deposited on pure titanium (99.9 %) and stainless steel (316L) substrates using the pulsed laser deposition (PLD) technique. PLD is a very versatile technique to deposit high quality films and it allows the stoichiometry transfer of a multi-component system from target to deposited film. The crystallographic orientation of the films was studied using the X-ray diffraction technique and the results showed that the films were polycrystalline with the (111) preferred orientation. The hydrophilic/hydrophobicity nature of the films was investigated using contact angle measurements and the results indicated that the TiN coated surfaces were hydrophilic (< 90°). Biocompatibility of the TiN thin films was characterized in terms of cell attachment of bone cells on the surfaces of the coatings. Human bone marrow stromal cells were cultured, seeded, stained and imaged using a fluorescent microscope. Results on the biological behavior of the TiN thin films suggest that TiN is a good biocompatible material and has great promises in biological applications.

1998 ◽  
Author(s):  
Huidong Gu ◽  
Kang M. Leung ◽  
Jonathan C. Y. Chung ◽  
X. D. Han

2012 ◽  
Vol 260 ◽  
pp. 2-6 ◽  
Author(s):  
D. Craciun ◽  
N. Stefan ◽  
G. Socol ◽  
G. Dorcioman ◽  
E. McCumiskey ◽  
...  

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
R. Krishnan ◽  
C. David ◽  
P. K. Ajikumar ◽  
R. Nithya ◽  
S. Tripura Sundari ◽  
...  

Titanium nitride (TiN) thin films were deposited by reactive pulsed laser deposition (RPLD) technique. For the first time, the composition evaluated from proton elastic backscattering spectrometry, in a quantitative manner, revealed a dependence on the partial pressure of nitrogen from 1 to 10 Pa. Grazing incidence-XRD (GI-XRD) confirmed the formation of predominantly nanocrystalline TiN phase with a crystallite size of around 30 nm. The hardness showed maximum value of ~30 GPa when the composition is near stoichiometric and the friction coefficient was found to be as low as 0.3. In addition, a systematic optical response was observed as a function of deposition pressure from the surface of the TiN films using spectroscopic ellipsometry.


Author(s):  
Alaa A. Mohammed

Titanium is the most broadly employed implant material for the load bearing dental and the orthopedic uses due to its brilliant biological and mechanical characteristics. The aim of the present study is to assay the biological behavior of pure Titanium coated with a bioactive glass coating made by pulsed laser deposition. The coating characteristic and the biological behavior of coated specimens were assessed and compared with uncoated specimens. In vitro biological behavior including bioactivity, biocompatibility and antibacterial property was evaluated. The bioactivity of the specimens was assayed by immersion in a simulated body fluid for various times (7 and 14) days. Biocompatibility was assessed by MTT assay of L929 mouse fibroblast cells after 1, 3 and 5 days. Also, the antibacterial property was evaluated against S. aures by optical density method. The obtained results revealed that the pulsed laser deposited bioactive glass coating significantly improved the potential of Titanium for dental and orthopedic applications.


2001 ◽  
Vol 11 (PR11) ◽  
pp. Pr11-65-Pr11-69
Author(s):  
N. Lemée ◽  
H. Bouyanfif ◽  
J. L. Dellis ◽  
M. El Marssi ◽  
M. G. Karkut ◽  
...  

2001 ◽  
Vol 11 (PR11) ◽  
pp. Pr11-133-Pr11-137
Author(s):  
J. R. Duclère ◽  
M. Guilloux-Viry ◽  
A. Perrin ◽  
A. Dauscher ◽  
S. Weber ◽  
...  

2002 ◽  
Vol 720 ◽  
Author(s):  
Costas G. Fountzoulas ◽  
Daniel M. Potrepka ◽  
Steven C. Tidrow

AbstractFerroelectrics are multicomponent materials with a wealth of interesting and useful properties, such as piezoelectricity. The dielectric constant of the BSTO ferroelectrics can be changed by applying an electric field. Variable dielectric constant results in a change in phase velocity in the device allowing it to be tuned in real time for a particular application. The microstructure of the film influences the electronic properties which in turn influences the performance of the film. Ba0.6Sr0.4Ti1-y(A 3+, B5+)yO3 thin films, of nominal thickness of 0.65 μm, were synthesized initially at substrate temperatures of 400°C, and subsequently annealed to 750°C, on LaAlO3 (100) substrates, previously coated with LaSrCoO conductive buffer layer, using the pulsed laser deposition technique. The microstructural and physical characteristics of the postannealed thin films have been studied using x-ray diffraction, scanning electron microscopy, and nano indentation and are reported. Results of capacitance measurements are used to obtain dielectric constant and tunability in the paraelectric (T>Tc) regime.


2021 ◽  
Vol 127 ◽  
pp. 105716
Author(s):  
Tianzhen Guo ◽  
Dan Wang ◽  
Yajun Yang ◽  
Xiaoyong Xiong ◽  
Kelin Li ◽  
...  

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