Matthias Cornelsen studied physics and computer science at the Ernst-Moritz-Arndt University of Greifswald, and has received his diploma in 2008. He wrote his diploma thesis in applied physics in the field of soft matter under the supervision of Prof. Dr. Christiane A. Helm. In the practical part of his work he has coated silicon wafers with different polyelectrolyte and characterized properties as the layer thickness and the roughness of these multilayers with X-ray reflection and atomic force microscope (AFM). Since 2009 Matthias Cornelsen is a member of research staff at the Chair of Fluid Technology and Microfluidics under Prof. Dr.-Ing. Hermann Seitz. He is engaged in the production of custom-made vitalized calciumphosphat (CaP) implants for the reconstruction of extensive bone defects with 3D-Printing and manufacturing of implants made of titanium by selective electron beam melting (SEBM).
His Topic of Materials' Days 2011:
Additive Manufacturing with Selective Electron Beam Melting
Selective Electron Beam Melting (SEBM) is an additive manufacturing process and allows the production of three-dimensional objects directly from CAD data. In the process, parts are built layerwise by depositing thin layers of metal powder on a plate and selectively melting the powder with an electron beam. A promising application of the technology is the production of individualized bone replacement implants based on computer tomography (CT) images of the patient data. Due to the layer-by-layer fabrication it is possible to produce titanium implants with defined external and internal structure. Additionally the mechanical properties of the implants can be adapted to the natural bone. The machine works with a powerful electron beam and the parts are built in vacuum. Therefore, the process offers very good conditions for processing a variety of reactive or high-melting metals for various technical and biomedical applications. Therefore the SEBM process is not limited to titanium.