ISSN:
1662-0356
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Natural Sciences in General
,
Technology
Notes:
A Nd:YAG laser is employed to ablate different materials useful in the bio-medicalfield. The laser source operates in the IR (1064 nm), VIS (532 nm) and UV (355 nm) regions with apulse duration of 3-9 ns, a pulse energy of 3-300 mJ, a spot size of 1 mm2 and a repetition rate of 1-30 Hz. Target material of interest are Titanium, Carbon, Hydroxyapatite (HA) and Polyethylene(PE). Laser irradiation occurs in vacuum, where hot plasma is generated, and thin films aredeposited on near substrates. Generally, substrates of silicon, titanium, titanium-alloys andpolymers were employed. Biocompatible thin films are investigated with different surfacetechniques, such as IR spectroscopy, Raman spectroscopy, XRD analysis and SEM investigations.Depending of the kind of possible application, films require special properties concerning the grainsize, porosity, uniformity, wetting, hardness, adhesion, crystallinity and composition. The obtainedresults will be presented and discussed with particular regard to HA
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/42/transtech_doi~10.4028%252Fwww.scientific.net%252FAST.49.56.pdf
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