Novel elastico-mechanoluminescence materials CaZnOS:Mn2+ and CaZr(PO4)2:Eu2+

Mechanoluminescence of Nanoparticles

Certain nanoparticles exhibit intense light emission during their elastic deformation, called the phenomenon of elastico mechanoluminescence (EML).When ZnS:Mn and SrAl2O4:Eu nanoparticles are deformed in the elastic region by the stress initially increasing with time and then attaining a fixed value or by the stress initially increasing and then decreasing with time or by the impact stress, the...

Novel materials.

Materials have central roles in all fields of engineering; they define, through structures and devices, our interfaces to the physical and the virtual world. The emergence of new materials catalyzes transformative advances in civilizations, to an extent that eras of human development are often defined by the prevailing materials used in engineered systems, from the Stone, Bronze, and Iron Ages ...

"Energy Relay Center" for doped mechanoluminescence materials: a case study on Cu-doped and Mn-doped CaZnOS.

We unraveled the mechanisms of transition metal-doped mechanoluminescent materials through a case study of CaZnOS. We found that the native point defect levels in Cu or Mn-doped CaZnOS system acted as energy relay centers for luminescence energy transfer. In combination with native point defect levels, discussed in a previous study [Phys. Chem. Chem. Phys., 2016, 18, 25946], we found that phosp...

Novel Cellulose and Starch-based Materials

The experiences on cellulose research in our region, first in Teltow and later in Potsdam-Golm, have extended over many years since the 1920s with the foundation of the Vereinigte Glanzstoff-Fabriken in Teltow-Seehof, followed by the Institut für Faserforschung and the Institut für Polymerforschung of the Academy of Sciences of the GDR, up to the Fraunhofer Institute for Applied Polymer Researc...

Novel Thermoplastic Polyimide Composite Materials