Publicado 4 números por año
ISSN Imprimir: 1947-5764
ISSN En Línea: 1947-5772
Indexed in
Optical Emission Spectroscopy and Contact Angle Study of Plasma Cleaning of Titanium Alloy Surfaces: Argon Plasma
SINOPSIS
Plasma cleaning is common in the preparation of titanium medical devices. In this study, we examine the use of continuous in situ measurements with optical emission spectroscopy (OES) during plasma cleaning and wet contact angle as a tool to assess titanium implant cleanliness. Plasma cleaning was performed in argon plasma at 66.7 Pa in a commercially available radio-frequency (RF) power plasma system using 25 or 100 W of power. During cleaning, the intensities of OES lines at 386 and 418 nm, as related to surface contaminants, decreased over time and reached a baseline level in ~1 h. However, the water contact angle (WCA) decreased more rapidly, reaching ≤10 degrees in 3-5 sec and further decreased to the limit of detection of ~1 ± 1 degree in 20 min using 25 W plasma and in 1 min using 100 W plasma. The OES data indicate that plasma cleaning starts with rapid removal of contaminants from pronounced regions that are better exposed to the plasma and is followed by prolonged cleaning related to the removal of contaminants from less accessible regions. The delayed rise in WCA demonstrates a limitation in using that technique to assess cleanliness and shows how OES is a useful tool to better understand and control plasma cleaning of titanium surfaces.
-
Karaman Ozan, Kelebek Seyfi, Demirci Emine Afra, İbiş Fatma, Ulu Murat, Ercan Utku Kürşat, Synergistic Effect of Cold Plasma Treatment and RGD Peptide Coating on Cell Proliferation over Titanium Surfaces, Tissue Engineering and Regenerative Medicine, 15, 1, 2018. Crossref
-
Samoila Florentina, Pohoata Valentin, Sirghi Lucel, Cleaning Away the Oleic Acid Contaminant from Glass Surface by Negative Glow Plasma, Plasma Chemistry and Plasma Processing, 38, 6, 2018. Crossref
-
Hirano Mitsuhiro, Yamane Misao, Ohtsu Naofumi, Effects of discharge mode and gas composition for plasma‐hydrophilized titanium surface on hydrophilic sustainability, Surface and Interface Analysis, 52, 12, 2020. Crossref
-
Devadevan M. M., Krishnanand J., Shilpa K. B., Kini R. N., A Compact, Fast, and Efficient Plasma Cleaner, IEEE Transactions on Plasma Science, 49, 11, 2021. Crossref