Berlin 2012 – scientific programme

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DS: Fachverband Dünne Schichten

DS 38: Poster III: Resistive switching (jointly with DF, KR, HL); Thermoelectric materials (Focused session); Micro- and nanopatterning (jointly with O); Ion irradiation effects

DS 38.44: Poster

Thursday, March 29, 2012, 17:30–19:00, Poster E

Ion beam nano-patterned surfaces as biomaterials — •Falk Wyrwa, Steffanie Kosan, Jessica Hönig, Raphael Niepelt, Jana Sommerfeld, and Carsten Ronning — Institute of solid state physics, Friedrich Schiller University of Jena, Helmholtzweg 3, 07743 Jena

We prepared wave-like ripple structures in the nanometer scale on silicon and titanium dioxide substrates using low energy sputtering with nobel gas ions. The ions were accelerated up to 20 keV hitting the target with a specific angle about 70° to the surface normal. Different ripple wavelengths and amplitudes could be achieved by varying the acceleration energy and the erosion time, which will lead to new surface characteristics without changing the chemical stoichiometry. Especially a different adsorbent behavior for protein molecules was established, which also depends on the substrate material itself. Motivated by the many possibilities to apply silicon and titanium dioxide in the biomedical field, we investigated their interaction with the biological environment, which will be presented in this contribution.