Berlin 2012 – scientific programme
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DS: Fachverband Dünne Schichten
DS 20: Application of thin films
DS 20.8: Talk
Wednesday, March 28, 2012, 11:15–11:30, H 0111
Biofunctionalization of diamond like carcon layers — •Sven Möller1, Jana Sommerfeld1, Thomas Keller2, and Carsten Ronning1 — 1Institute of Solid State Physics, University of Jena, Helmholtzweg 3, 07743 Jena — 2Institute of Material Science and Technology, University of Jena, Löbdergraben 32, 07743 Jena
Diamond like carbon (DLC) is known to be a promising material for various biomedical applications. Due to this capability we have investigated its interaction with biological material like proteins. The DLC layers in this work have been prepared via mass separated ion beam deposition (MSIBD) on silicon substrates. For this purpose, carbon ions were accelerated with a voltage of 30 kV, separated by a 90∘ sector magnet and focused by a system of electron lenses. For deposition on the substrate, the ions were decelerated afterwards down to a few hundred eV. The ion energy at the end of the deposition process works as an indicator for the sp3 content respectively the diamond likeness of the layer. Furthermore the surface can be changed by ion beam irradiation additionally in order to create regions with different surface properties. A solution containing the designated proteins were applied to the substrate, which has been analyzed afterwards using several techniques like atomic force microscopy for roughness measurements and contact angle measurements to study the wettability.