Study of optical properties and biocompatibility of DLC films characterized by sp.sup.3./sup. bonds

0396345 - FZÚ 2014 RIV DE eng J - Journal Article
Písařík, Petr - Jelínek, Miroslav - Smetana Jr., K. - Dvořánková, B. - Kocourek, Tomáš - Zemek, Josef - Chvostová, Dagmar
Study of optical properties and biocompatibility of DLC films characterized by sp³ bonds.
Applied Physics A - Materials Science & Processing. Roč. 112, č. 1 (2013), s. 143-148. ISSN 0947-8396. E-ISSN 1432-0630
Institutional research plan: CEZ:AV0Z10100522
Keywords : biocompatibility * diamond-like carbon * optical properties * pulsed laser deposition * sp³/sp² ratio
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 1.694, year: 2013

Optical and biomedical properties of diamond-like carbon (DLC) films of various sp2, sp3 bonds were studied. The layers were prepared by pulsed laser deposition (PLD) for laser energy densities from 4 J cm-2 to 14 J cm.-2. The percentage of sp2 and sp3 bonds was calculated using X-ray photoelectron spectroscopy (XPS). In dependence on density the films contained up to 70 % of sp3 bonds. Optical properties were measured using spectroscopic ellipsometry in region from 250 nm to 1000 nm (n=2.6–2.7; k=0.07–0.25) and by transmission measurement (from 200 nm to 1100 nm). The adhesion and growth of human fibroblasts and keratinocytes of DLC films were tested in vitro.
Permanent Link: http://hdl.handle.net/11104/0224149