Katharina Freitag

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Poly(ethylene oxide) (PEO)-based polymer fibers, containing different amounts of the conductive salt LiBF4 and the plasticizer succinonitrile, were prepared by an electrospinning process. This process resulted in fiber membranes of several square centimeters area and an overall thickness of ∼100 μm. All membranes are characterized by scanning electron(More)
Massive Open Online Courses, sogenannte MOOCs, stellen eine innovative Form des Online-Lernens dar, in der Kurse zu umfassenden Themenkomplexen einer potenziell sehr großen Gruppe von Lernern frei im Internet zur Verfügung gestellt werden. MOOCs werden typischerweise in einer Lerncommunity, oftmals fachlich begleitet durch Experten, kollaborativ(More)
NaCd4P3 and NaCd4As3 were synthesized via short-way transport using the corresponding elements and CdI2 as mineralizer. At room temperature, the two β-polymorphs adopt the RbCd4As3 structure type which has been recently reported for alkali metal (A)-d(10) transition metal (T)-pnictides (Pn). The title compounds crystallize rhombohedrally in space group R3̅m(More)
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