A04 - Electrically conductive multilayer films for implant surfaces

Summary of the work programme

To understand and eventually to control the reaction of cells to electro-stimulation, many cells are to be exposed simultaneously to the same time-dependent electric field. Cells will grow on large (centimetre-squared) flat surfaces, which will be functionalised with ultrathin electrically conductive, multilayer films. These films are prepared by sequential adsorption of oppositely charged macromolecules and electrically conductive nanoparticles, with the adsorption sequence of the different composites determining the properties of each film.

Cooperation projects

A02 / A03 / C04

Publications

2019

Mohamad, Heba Soker; Neuber, Sven; Helm, Christiane A. (2019): Surface Forces of Asymmetrically Grown Polyelectrolyte Multilayers: Searching for the Charges. In: Langmuir : the American Chemical Society journal of surfaces and colloids 35 (48), S. 15491–15499. DOI: 10.1021/acs.langmuir.9b01787.

Sill, Annekatrin; Nestler, Peter; Azinfar, Amir; Helm, Christiane A. (2019): Tailorable Polyanion Diffusion Coefficient in LbL Films: The Role of Polycation Molecular Weight and Polymer Conformation. In: Macromolecules 52 (22), S. 9045–9052. DOI: 10.1021/acs.macromol.9b01761.
 

2018

Runde, Sebastian; Ahrens, Heiko; Lawrenz, Frank; Sebastian, Amal; Block, Stephan; Helm, Christiane A. (2018): Stable 2D Conductive Ga/Ga(OxHy) Multilayers with Controlled Nanoscale Thickness Prepared from Gallium Droplets with Oxide Skin. In: Advanced Materials Interfaces 5 (16), S. 1800323. DOI: 10.1002/admi.201800323.
 

2017

Nestler, Peter; Helm, Christiane A. (2017): Determination of refractive index and layer thickness of nm-thin films via ellipsometry. In: Optics Express 25 (22), S. 27077–27085. DOI: 10.1364/OE.25.027077.

Conference papers

2020

Grüning, Martina; Lehnfeld, Jutta; Neuber, Sven; Nestler, Peter; Fricke, Katja; Dubs, Manuela et al. (2020): Zeta potential as key property for the development of functional biomaterials. 11th World Biomaterials Congress. Glasgow, Scotland, May 2020.
 

2019

Nebe, Barbara J.; Grüning, Martina; Rebl, Henrike; Finke, Birgit; Helm, Christiane A.; Schnabelrauch, Matthias et al. (2019): Complex cell physiology on chemically and topographically designed implant surfaces. 3rd International Conference on Dentistry and Oral Health. London, United Kingdom, September 2019.
 

2018

Grüning, Martina; Rebl, Henrike; Stählke, Susanne; Finke, Birgit; Neuber, Sven; Helm, Christiane A.; Nebe, Barbara J. (2018): Biomaterial surface charges and their influence on cell signaling in living osteoblasts. 29th European Conference on Biomaterials. Maastrict, Netherlands, September 2018.

Grüning, Martina; Rebl, Henrike; Stählke, Susanne; Finke, Birgit; Neuber, Sven; Helm, Christiane A.; Nebe, Barbara J. (2018): Polyelectrolyte multilayers on titanium and their influence on osteoblast behavior. 9th International Congress Nanotechnology in Biology Medicine. Graz, Austria, April 2018.

Mohamad, Heba Soker; Neuber, Sven; Helm, Christiane A. (2018): How to tune the surface forces of PDADMA terminated polyelectrolyte multilayers. Fachverband Chemische Physik und Polymerphysik. Berlin, Germany, March 2018.

Mohamad, Heba Soker; Neuber, Sven; Sill, Annekatrin; Helm, Christiane A. (2018): A wide Range of Surface Forces of PSS terminated Polyelectrolyte Multilayers. Deutsche Physikalische Gesellschaft-Frühjahrstagung der Sektion Kondensierte Materie gemeinsam mit der European Physical Society. Berlin, March.

Sill, Annekatrin; Azinfar, Amir; Neuber, Sven; Nestler, Peter; Helm, Christiane A. (2018): Molecular properties and growth conditions associated with PSS diffusion during annealing in polyelectrolyte multilayers. Fachverband Chemische Physik und Polymerphysik. Berlin, Germany, March 2018.

Posters

2019

Azinfar, Amir; Neuber, Sven; Vaněček, Jiří; Vancová, Marie; Sterba, Jan; Straňák, Vítězslav; Helm, Christiane A. (2019): Buckling patterns and their elastic response on the surface of polyelectrolyte multilayer films with short PSS chains. Regensburg, Germany.

Grüning, Martina; Lehnfeld, Jutta; Müller, Rainer; Fricke, Katja; Neuber, Sven; Helm, Christiane A. et al. (2019): Material surface charges and their influence on cell physiology. 6th International Symposium Interface Biology of Implants. Warnemünde, Germany.

Grüning, Martina; Lehnfeld, Jutta; Müller, Petra; Fricke, Katja; Neuber, Sven; Helm, Christiane A. et al. (2019): The role of material’s zeta potential on intracellular calcium ion signaling. 4th European Symposium on Intelligent Materials. Kiel, Germany.

Mohamad, Heba Soker; Neuber, Sven; Helm, Christiane A. (2019): Surface forces of asymmetrically grown polyelectrolyte multilayers: searching for the charges. Nano-Bio-Physics Symposium: “Stretching the boundaries of physics, one molecule at a time”. Munich, Germany.

Mohamad, Heba Soker; Neuber, Sven; Sill, Annekatrin; Helm, Christiane A. (2019): A wide Range of Surface Forces of PSS terminated Polyelectrolyte Multilayers. University of Greifswald. Greifswald, Germany.

Neuber, Sven; Sill, Annekatrin; Ahrens, Heiko; Helm, Christiane A. (2020): Electrically conductive multilayer films created from carbon nanotubes and polyelectrolytes. Rostock, Germany.

Neuber, Sven; Sill, Annekatrin; Ahrens, Heiko; Helm, Christiane A. (2019): Electrically conductive multilayer films created from carbon nanotubes and polyelectrolytes. Regensburg, Germany.

Neuber, Sven; Sill, Annekatrin; Ahrens, Heiko; Helm, Christiane A. (2019): Electrically conductive multilayer films created from carbon nanotubes and polyelectrolytes. Barcelona, Spain.

Sill, Annekatrin; Weltmeyer, Antonia; Nestler, Peter; Paßvogel, Malte; Neuber, Sven; Helm, Christiane A. (2019): Polyelectrolyte Multilayer Films from Mixtures of Polyanions: Different Composition in Film and Preparation Solution. University of Greifswald. Berlin, Germany.
 

2018

Azinfar, Amir; Neuber, Sven; Vaněček; Jiří; Vancová, Marie; Sterba, Jan; Straňák, Vítězslav; Helm, Christiane A. (2018): Roughness and Salt Annealing of a Polyelectrolyte Multilayer. Frühjahrstagung der Deutsche Physikalische Gesellschaft. Berlin, Germany.

Grüning, Martina; Rebl, Henrike; Stählke, Susanne; Finke, Birgit; Neuber, Sven; Helm, Christiane A.; Nebe, Barbara J. (2018): Polyelectrolyte multilayers on titanium and their influence on osteoblast behavior. Graz, Austria.

Grüning, Martina; Rebl, Henrike; Stählke, Susanne; Finke, Birgit; Neuber, Sven; Helm, Christiane A.; Nebe, Barbara J. (2018): Biomaterial surface charges and their influence on cell signaling in living osteoblasts. 29th European Conference on Biomaterials. Maastricht, Netherlands.

Project leader

Prof. Dr. rer. nat. habil. Christiane A. Helm
E-Mail
Tel.: +49 3834 420 4710

Institution

University of Greifswald
Institute of Physics
Felix-Hausdorff-Str. 6
17489 Greifswald