Archeometric studies supported through Erasmus Agreement with the University of Peloponnese

In a highly interdisciplinary endeavor, the Laboratory of Glass Science at OSIM (Jena) and the Laboratory of Archaeometry, Dept. of History, Archaeology and Cultural Resources Management in Kalamata, Greece, have initiated a cooperation with a focus on research and education in archaeometry. Within the Erasmus program of the EU, a collaboration contract has now been signed which will provide students of FSU (materials science, chemistry) the opportunity to spend parts of their studies at the University of Peloponnese (UP). In return students majoring in archaeology at UP will be welcome in Jena. The program falls in the broader context of bringing together materials scientists and archeologists with the specific goal to employ methods of materials science towards archeological problems....
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More efficient solar energy harvesting in algae reactors

Sustainable biomass production is expected to be one of the major supporting pillars for future energy supply, as well as for renewable material provision. Algal beds represent an exciting resource for biomass/biofuel, fine chemicals and CO2 storage. Similar to other solar energy harvesting techniques, the efficiency of algal photosynthesis depends on the spectral overlap between solar irradiation and chloroplast absorption. Here we demonstrate that spectral conversion can be employed to significantly improve biomass growth and oxygen production rate in closed-cycle algae reactors. For this purpose, we adapt a photoluminescent phosphor of the type Ca0.59Sr0.40Eu0.01S, which enables efficient conversion of the green part of the incoming spectrum into red light to better match the Qy peak of chlorophyll b. Integration of a Ca0.59Sr0.40Eu0.01S backlight converter into a flat panel algae reactor filled with Haematococcus pluvialis as a model species results in significantly increased photosynthetic activity and algae reproduction rate. Together with colleagues from the University of Erlangen and the Bavarian Center for...
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Research on Bi-doped glasses among most-cited papers of J. Non.-Cryst. Solids

One of our recent manuscripts on Bi-doped glasses has been highlighted among the top 25 papers (out of 3.300) of the Journal of Non-Crystalline Solids which have received the most citations since 2008. In the paper, we discuss the nature of ultrabroad near-infrared photoluminescence from Bi-doped glasses and crystals, a topic which is presently of sigificant interest due to the potential of such materials as broadband optical amplifiers or fiber laser sources. (link) Reference: Peng, M., Dong, G., Wondraczek, L., Zhang, L., Zhang, N., Qiu, J. Discussion on the origin of NIR emission from Bi-doped materials. J. Non-Cryst. Solids 357, 2241-2245 (2011)....
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