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Oral Poster

The Influence of Surface Nanopatterns with varying Periodicities on Protein adsorption

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Line-Up:
18:40 Oral Poster Effect of surface processing on roughness, wettability and cytotoxicity of carbon fiber-reinforced polyetheretherketone (PEEK) composite fabricated by fused deposition modeling 1 Dr. Xingting Han
18:43 Oral Poster Characterisation of bactericidal titanium surfaces using electron microscopy 1 Ph.D. Joshua Jenkins
18:49 Oral Poster Parvovirus B19 virus-like particles as platform for the development of biomaterials. 1 Prof. Dr. Ismael Bustos-Jaimes
18:52 Oral Poster The Influence of Surface Nanopatterns with varying Periodicities on Protein adsorption 1 Yu Yang
18:55 Oral Poster Opaque, Translucent and Transparent Flower Petals 1 Takumi Arakawa
18:58 Oral Poster Impact of Surface Morphology and Net Charge of Spider Silk based Materials on Interactions with Human Blood Components 1 Sarah Lentz
19:01 Oral Poster Modulation of Bacteria on Titanium Surfaces via Nanotopography and Antimicrobial Peptides 1 Marcus Eales
19:04 Oral Poster Degradable hybrid polymers for tissue engineering 1 Johannes Schwaiger
19:07 Oral Poster Antibacterial functionalization of plasma-chemical oxidized titanium surfaces 1 Dr. Stefan Kranz
19:10 Oral Poster Thermal crosslinking of hydrophilic polymers using polyperoxides 1 Ph.D. Solomiia Borova
19:13 Oral Poster Poly(peptoid)s: Peptidomimetics as potential Biomaterials 1 Christine Schlutt
19:16 Oral Poster A Nanoscaled Hybrid Coating for Neuronal Electrodes: Nanoporous Silica NPs Embodied into Nanoporous Platinum. 1 Tim-Joshua Pinkvos
19:19 Oral Poster Drug Delivery from Nanoporous Titania Coatings for Dental Application 1 Saskia Zailskas
19:22 Oral Poster Waste to resource: Biopolymer from industrial wastewater 1 Prof. Regina Nogueira
19:25 Oral Poster Divide and Comprehend: Separating the Effects of Hydrophobicity / Hydrophilicity and Crystallinity on the Thermal Properties of Polyester Based Drug Delivery Systems 1 Karl Scheuer
19:28 Oral Poster Elastic Polymer-Coated Nano- and Macroporous Bioactive Glass-Composites for Bone Regeneration 1 Marvin Lietzow
19:34 Oral Poster Alginate/silk fibroin-based hydrogels for vascularized tissue constructs 1 Dr. Raminder Singh
19:37 Oral Poster Diclofenac and moxifloxacin simultaneous delivery from intraocular lenses for endophthalmitis prophylaxis 1 Prof. Ana Serro
19:40 Oral Poster Optimization of a calcium phosphate based bone cement formulation 1 Prof. Dr. Rogério Cola?o
19:43 Oral Poster Nanostructured bone apatite-like thin films for bone prostheses 1 Dr. Gabriela Graziani
19:46 Oral Poster Low-dose BMP-2 enhances the bone-forming effects of an injectable, PLGA fiber-reinforced, brushite-forming cement in sheep lumbar osteopenia defects 1 Francesca Gunnella
19:49 Oral Poster The PLGA fiber component of brushite-forming calcium phosphate cement induces the osteogenic differentiation of human adipose tissue-derived stem cells 1 Francesca Gunnella
19:52 Oral Poster Surface functionalization of nanofibers by plasma processing in Ar/CO2/C2H4 discharge 0 Ph.D. Elizaveta Permyakova
19:55 Oral Poster Three-dimensional nanoscale X-ray computed tomography for the visualisation of cells grown on fibrous scaffolds 1 Dr. Juliana Martins de Souza e Silva

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Protein adsorption and the resulting surface-bound protein layer have long been recognized to play a significant role in cellular response, such as cell migration, proliferation etc.. To tailor the protein-surface affinity, the surface can be modified through various chemical and physical surface treatments. In particular, the possibility to enhance bioactivity and osseointegration via topographic surface modifications at nanometer scales has recently received considerable interest. As an established implant material, titanium with its passivating oxide layer is of particular relevance for many medical applications. However, the influence of nanoscale surface topography on protein adsorption onto titanium surfaces is so far not fully understood.

To investigate the effects of the nanostructured surface topography on protein adsorption, nano-rippled silicon substrates with varying periodicities were prepared using low-energy ion bombardment. The nanoscale ripple patterns form spontaneously by self-organization on the Si surface during off-normal irradiation with low-energy Ar+-ions. By optimizing the sputtering conditions, such as ion energy, the periodicity of ripple has been tuned between 20 nm to 50 nm. Magnetron sputter deposition under optimized conditions results in thin titanium films that perfectly follow the ripple patterns. The so fabricated nanopatterned titanium surfaces are employed to investigate the effect of nanoscale surface topography on the adsorption of various proteins by ellipsometry and atomic force microscopy.

Speaker:
Yu Yang
Paderborn University
Additional Authors:
  • Mingrui Yu
    Paderborn University
  • Prof. Dr. Guido Grundmeier
    Paderborn University
  • Dr. Adrian Keller
    Paderborn University