Please use this identifier to cite or link to this item: doi:10.22028/D291-27874
Title: Deposition of Ultrathin Nano-Hydroxyapatite Films on Laser Micro-Textured Titanium Surfaces to Prepare a Multiscale Surface Topography for Improved Surface Wettability/Energy
Author(s): Surmeneva, Maria
Nikityuk, Polina
Hans, Michael
Surmenev, Roman
Language: English
Title: Materials
Volume: 9
Issue: 11
Publisher/Platform: MDPI
Year of Publication: 2016
Free key words: biocompatible coating
multiscale topography
rf magnetron sputtering
surface patterning
DDC notations: 550 Earth sciences and geology
Publikation type: Journal Article
Abstract: The primary aim of this study was to analyse the correlation between topographical features and chemical composition with the changes in wettability and the surface free energy of microstructured titanium (Ti) surfaces. Periodic microscale structures on the surface of Ti substrates were fabricated via direct laser interference patterning (DLIP). Radio-frequency magnetron sputter deposition of ultrathin nanostructured hydroxyapatite (HA) films was used to form an additional nanoscale grain morphology on the microscale-structured Ti surfaces to generate multiscale surface structures. The surface characteristics were evaluated using atomic force microscopy and contact angle and surface free energy measurements. The structure and phase composition of the HA films were investigated using X-ray diffraction. The HA-coated periodic microscale structured Ti substrates exhibited a significantly lower water contact angle and a larger surface free energy compared with the uncoated Ti substrates. Control over the wettability and surface free energy was achieved using Ti substrates structured via the DLIP technique followed by the deposition of a nanostructured HA coating, which resulted in the changes in surface chemistry and the formation of multiscale surface topography on the nano- and microscale.
DOI of the first publication: 10.3390/ma9110862
Link to this record: urn:nbn:de:bsz:291--ds-278744
ISSN: 1996-1944
Date of registration: 9-Nov-2020
Faculty: NT - Naturwissenschaftlich- Technische Fakultät
Department: NT - Materialwissenschaft und Werkstofftechnik
Professorship: NT - Keiner Professur zugeordnet
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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