Εξειδίκευση τύπου :	Άρθρο σε επιστημονικό περιοδικό
Τίτλος:	Copper-based opaque red glasses – Understanding the colouring mechanism of copper nanoparticles in archaeological glass samples
Δημιουργός/Συγγραφέας:	Drünert F. Blanz M. Pollok K. Pan Z. Wondraczek L. Möncke D.
Εκδότης:	Elsevier B.V.
Ημερομηνία:	2018
Γλώσσα:	Αγγλικά
ISSN:	0925-3467
DOI:	10.1016/j.optmat.2017.12.054
Περίληψη:	Red opaque glasses of two different sites in central Germany, a medieval glassworks in Glashütten, Taunus Mountains, and an early modern glassworks in Wieda, Harz Mountains, were analysed with regard to their optical appearance. By scanning electron microscopy and X-ray diffraction, metallic copper nanoparticles were identified as a conspicuous constituent in these glasses. In addition, similar opaque red glasses were reproduced in the laboratory in order to better understand the manufacturing process. Detailed analysis of the optical scattering was conducted in order to evaluate the role of Cu0 nanoparticles in the colouring mechanism relative to other possible reasons of colouration. We find clear differences between the possible contributions of Cu2O (cuprite) particles and metallic copper (Cu0) nanoparticles. Through simulated backscattering spectra we were able to calculate an average copper particle radius in the archaeological glass samples resulting in a value of up to 95 nm, which matches well the results of SEM investigation (minimum 65 nm). Using the methods we applied in this study, it becomes possible to reconstruct various processing conditions as they were applied in medieval manufacture of these particular materials.
Τίτλος πηγής δημοσίευσης:	Optical Materials
Τόμος/Κεφάλαιο:	76
Σελίδες:	375-381
Θεματική Κατηγορία:	[EL] Φυσική και θεωρητική χημεία[EN] Physical and theoretical chemistry
Λέξεις-Κλειδιά:	Copper nanoparticles Copper ruby Historical glass making practices Medieval glasses Mie-scattering Opaque red glasses
Αξιολόγηση από ομότιμους (peer reviewed):	Ναι
Κάτοχος πνευματικών δικαιωμάτων:	© 2018 Elsevier B.V.
Σημειώσεις:	California Department of Fish and Wildlife, CDFW: LA830/14-1; Friedrich-Schiller-Universität Jena, FSU; Deutsche Forschungsgemeinschaft, DFG: DFG LA830/14-1
Εμφανίζεται στις συλλογές:	Ινστιτούτο Θεωρητικής και Φυσικής Χημείας (ΙΘΦΧ) - Επιστημονικό έργο