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Alexander Sommereyns
Researcher at University of Erlangen-Nuremberg
Publications - 11
Citations - 97
Alexander Sommereyns is an academic researcher from University of Erlangen-Nuremberg. The author has contributed to research in topics: Nanoparticle & Polyamide. The author has an hindex of 5, co-authored 9 publications receiving 41 citations.
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Journal ArticleDOI
3D printing of magnetic parts by laser powder bed fusion of iron oxide nanoparticle functionalized polyamide powders
Tim Hupfeld,Soma Salamon,Joachim Landers,Alexander Sommereyns,Carlos Doñate-Buendía,Carlos Doñate-Buendía,Jochen Schmidt,Heiko Wende,Michael Schmidt,Stephan Barcikowski,Bilal Gökce +10 more
TL;DR: In this paper, a way to fabricate polymer powders for laser powder bed fusion (PBF-LB) with a homogeneous, well-dispersed coating of iron oxide nanoparticles is described.
Journal ArticleDOI
Analysis of the Nanoparticle Dispersion and Its Effect on the Crystalline Microstructure in Carbon-Additivated PA12 Feedstock Material for Laser Powder Bed Fusion
Tim Hupfeld,Alexander Sommereyns,Farbod Riahi,Carlos Doñate-Buendía,Stan Gann,Michael Schmidt,Bilal Gökce,Stephan Barcikowski +7 more
TL;DR: This study demonstrates the colloidal additivation of PA12 powder with laser-synthesized carbon nanoparticles at >95% yield, and finds that heterogeneous nucleation is induced even at a nanoparticle loading of just 0.005 vol%.
Journal ArticleDOI
Influence of sub-monolayer quantities of carbon nanoparticles on the melting and crystallization behavior of polyamide 12 powders for additive manufacturing
Alexander Sommereyns,Tim Hupfeld,Stan Gann,Tao Wang,Cunchen Wu,Evgeny Zhuravlev,Arne Lüddecke,Stéphanie Baumann,Johannes Rudloff,Marieluise Lang,Bilal Gökce,Stephan Barcikowski,Michael Schmidt +12 more
TL;DR: In this article, the influence of carbon nanoparticles on the surface of polyamide 12 powder particles by dry coating and colloidal additivation is evaluated in great detail concerning thermal and microstructural properties.
Journal ArticleDOI
How colloidal surface additivation of polyamide 12 powders with well-dispersed silver nanoparticles influences the crystallization already at low 0.01 vol%
Tim Hupfeld,Alexander Sommereyns,Thomas Schuffenhauer,Evgeny Zhuravlev,Moritz Krebs,Stan Gann,Olaf Keßler,Michael Schmidt,Bilal Gökce,Stephan Barcikowski +9 more
TL;DR: In this article, the authors present a deeper understanding of the colloidal surface additivation of polyamide 12 (PA12) powders with laser-generated plasmonic silver nanoparticles, leading to high dispersion of the nanoparticles on the micropowder surface.
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Roughly Spherical: Tailored PMMA-SiO2 Composite Supraparticles with Optimized Powder Flowability for Additive Manufacturing.
TL;DR: In this paper, the authors demonstrate the design of spherical polymethyl methacrylate (PMMA) and PMMA-SiO2 composite supraparticle powders with excellent powder flowability and tailored composition for powder-based additive manufacturing.