Chair for Multicomponent Materials

Functional Biosurfaces

The synergy by combining superior topographic characteristics of one-dimensional (1D) and low surface energy of PTFEP was proposed to reduce thrombus formation and bacterial adhesion for cardiovascular implants. The prepared Al2O3 NWs exhibited superior topographic features, which promote superhydrophobicity.

Video 1. Blood droplets sliding on pristine (without PTFE) Al2O3 NW and PTFEP-Al2O3 NW substrates.

The nanoscale air-pockets with pronounced hierarchical dual-scale surface roughness form a stable air cushion within the deposited layer that leads to extremely small overall contact area between the surface and blood in contact below the liquid.



Fig 1. Front Cover Illustration for “PTFEP-Al2O3 Hybrid Nanowires Reducing Thrombosis and Biofouling”.


Selected publications

A. Haidar, A.A. Ali, S. Veziroglu, J. Fiutowski, H. Eichler, I. Müller, K. Kiefer, F. Faupel, M. Bischoff, M. Veith, O.C. Aktas, H. Abdul-Khaliq, PTFEP–Al2O3 hybrid nanowires reducing thrombosis and biofouling, Nanoscale Adv. 1 (2019) 4659–4664.

O.C. Aktas, W. Metzger, A. Haidar, Y. Açil, A. Gülses, J. Wiltfang, C.M. Sacramento, F.P. Nothdurft, Enhancing adhesion and alignment of human gingival fibroblasts on dental implants, J. Cranio-Maxillofacial Surg. 47 (2019) 661–667.

O.C. Aktas, W. Metzger, L. Mees, M.M. Martinez, A. Haidar, M. Oberringer, G. Wennemuth, N. Pütz, M.Z. Ghori, T. Pohlemann, M. Veith, Controlling fibroblast adhesion and proliferation by 1D Al2O3 nanostructures, IET Nanobiotechnology. (2019) 621–625.