Abstract
A series of nanostructured low-crystalline hydroxyapatite (HA) coatings averaging 170, 250, and 440 nm in thickness were deposited onto previously etched titanium substrates through radio-frequency (RF) magnetron sputtering. The HA coatings were analyzed using infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning and transmission electron microscopy (SEM and TEM). Cross sections of the thin specimens were prepared by FIB to study the microstructure of the coatings by TEM. The deposition process formed nano-scale grains, generating an amorphous layer at the substrate/coating interface and inducing the growth of a columnar grain structure perpendicular to the substrate surface. A microstructural analysis of the film confirmed that the grain size and crystallinity increased when increasing the deposition time. The nanostructured HA coatings were not cytotoxic, as proven by in vitro assays using primary dental pulp stem cells and mouse fibroblast NCTC clone L929 cells. Low-crystallinity HA coatings with different thicknesses stimulated cells to attach, proliferate and form mineralized nodules on the surface better than uncoated titanium substrates.
| Original language | English |
|---|---|
| Pages (from-to) | 172-180 |
| Number of pages | 9 |
| Journal | Applied Surface Science |
| Volume | 317 |
| DOIs | |
| Publication status | Published - 1 Jan 2014 |
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Keywords
- Bioactivity
- Functionally graded material
- Hydroxyapatite
- Radio-frequency magnetron sputtering
ASJC Scopus subject areas
- Surfaces, Coatings and Films
Cite this
Fabrication, ultra-structure characterization and in vitro studies of RF magnetron sputter deposited nano-hydroxyapatite thin films for biomedical applications. / Surmeneva, Maria A.; Surmenev, Roman A.; Nikonova, Yulia A.; Selezneva, Irina I.; Ivanova, Anna A.; Putlyaev, Valery I.; Prymak, Oleg; Epple, Matthias.
In: Applied Surface Science, Vol. 317, 01.01.2014, p. 172-180.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Fabrication, ultra-structure characterization and in vitro studies of RF magnetron sputter deposited nano-hydroxyapatite thin films for biomedical applications
AU - Surmeneva, Maria A.
AU - Surmenev, Roman A.
AU - Nikonova, Yulia A.
AU - Selezneva, Irina I.
AU - Ivanova, Anna A.
AU - Putlyaev, Valery I.
AU - Prymak, Oleg
AU - Epple, Matthias
PY - 2014/1/1
Y1 - 2014/1/1
N2 - A series of nanostructured low-crystalline hydroxyapatite (HA) coatings averaging 170, 250, and 440 nm in thickness were deposited onto previously etched titanium substrates through radio-frequency (RF) magnetron sputtering. The HA coatings were analyzed using infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning and transmission electron microscopy (SEM and TEM). Cross sections of the thin specimens were prepared by FIB to study the microstructure of the coatings by TEM. The deposition process formed nano-scale grains, generating an amorphous layer at the substrate/coating interface and inducing the growth of a columnar grain structure perpendicular to the substrate surface. A microstructural analysis of the film confirmed that the grain size and crystallinity increased when increasing the deposition time. The nanostructured HA coatings were not cytotoxic, as proven by in vitro assays using primary dental pulp stem cells and mouse fibroblast NCTC clone L929 cells. Low-crystallinity HA coatings with different thicknesses stimulated cells to attach, proliferate and form mineralized nodules on the surface better than uncoated titanium substrates.
AB - A series of nanostructured low-crystalline hydroxyapatite (HA) coatings averaging 170, 250, and 440 nm in thickness were deposited onto previously etched titanium substrates through radio-frequency (RF) magnetron sputtering. The HA coatings were analyzed using infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning and transmission electron microscopy (SEM and TEM). Cross sections of the thin specimens were prepared by FIB to study the microstructure of the coatings by TEM. The deposition process formed nano-scale grains, generating an amorphous layer at the substrate/coating interface and inducing the growth of a columnar grain structure perpendicular to the substrate surface. A microstructural analysis of the film confirmed that the grain size and crystallinity increased when increasing the deposition time. The nanostructured HA coatings were not cytotoxic, as proven by in vitro assays using primary dental pulp stem cells and mouse fibroblast NCTC clone L929 cells. Low-crystallinity HA coatings with different thicknesses stimulated cells to attach, proliferate and form mineralized nodules on the surface better than uncoated titanium substrates.
KW - Bioactivity
KW - Functionally graded material
KW - Hydroxyapatite
KW - Radio-frequency magnetron sputtering
UR - http://www.scopus.com/inward/record.url?scp=84908181044&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84908181044&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2014.08.104
DO - 10.1016/j.apsusc.2014.08.104
M3 - Article
AN - SCOPUS:84908181044
VL - 317
SP - 172
EP - 180
JO - Applied Surface Science
JF - Applied Surface Science
SN - 0169-4332
ER -