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Research Projects Environmental scanning electron microscopical studies of ice-forming nuclei (SFB 641; “Die troposphärische Eisphase” (2004-2007). Electron microscopy of Saharan mineral dust (DFG Forschergruppe SAMUM) (2004- 2010). Source apportionment of rural and urban aerosols. Characterization of working place aerosols (National Institute of Occupational Health, Oslo, Norway) Environmental scanning electron microscopical studies of the hygroscopic behaviour of individual aerosol particles. Publications 2006 Ebert, Martin; Der Staub in unserer Atmosphäre, in: Staub, Spiegel der Umwelt, J. Söntgen und K. Völzke, Ed. Oekom Verlag (2006) 83-96. Mazurek, M.; Benker, N.; Roth, C.; Buhrmester, Th.; Fuess, H.; Electrochemical Impedance and X-ray absorption spectroscopy (EXAFS) as in-situ methods to study the PEMFC anode, Fuel Cells 6 (1) (2006) 16-20. Benker, N.; Roth, C.; Mazurek, M.; Fuess, H.; Synthesis and characterisation of ternary Pt/Ru/Mo catalysts for the anode of the PEM fuel cell, J. New Mat. Electrochem. Sys. 9, (2006) 121-126. Mazurek, M.; Benker, N.; Roth, C.; Fuess, H.; Structural and electrochemical investigation of binary mixtures of carbon-supported Pt and Ru catalysts for PEM fuel cells, Fuel Cells 6 (2006) 208-213. Thomassen Y.; Koch W.; Dunkhorst W.; Ellingsen D.G.; Skaugset N.P.; Jordbekken L.; Drabløs P.A.; and Weinbruch S.; Ultrafine particles at workplaces of a primary aluminium smelter, J. of Environmental Monitoring, 8, (2006)127-133. Weinbruch S.; Styrsa V.; and Dirsch T.; The size distribution of exsolution lamellae in iron-free clinopyroxene, American Mineralogist, 91, (2006) 551-559. Zimmermann F.; Matschullat J.; Brüggemann E.; Plessow K.; Wienhaus O.; Temporal and elevation-related variability in precipitation chemistry from 1993 to 2002, eastern Erzgebirge, Germany, Water, Air, and Soil Pollution 170 (2006), 123- 141. Zimmermann F.; Plessow K.; Queck R.; Bernhofer C.; Matschullat, J.; Atmospheric N- and S-fluxes to a spruce forest – Comparison of inferential modelling and the throughfall method, Atmospheric Environment 40 (2006), 4782-4796. - 136 -
Reports of Research Activities The terraces of Lake Lisan: a continuous record of the climatic changes during the Late Pleistocene. Shahrazad Abu Ghazleh and Stephan Kempe Lake Lisan filled the Dead Sea depression between 63-15 Ka B.P. (Kaufmann et al., 1992; Shramm et al., 2000). The regression of the Lake Lisan to the current Dead Sea led to a sequence of shore terraces (Fig. 1) that offer excellent possibilities to reconstruct the lake history and correlate it with climatic changes during the Late Pleistocene. Five cross sections of these terraces were examined by differential GPS altimetry. The terraces were found to be horizontal, undisturbed and characterized by a gentle foreshore with a slope of 3.5-12 degrees and a steep backshore with slope of 12-27 degrees. The terraces range in elevation between -370 and -117 m (i.e. below sea level) that represent the levels of the lake in Late Pleistocene and suggest (a) a much higher stand of Lake Lisan at -117 m (Fig. 2) than the previous known level of -150 m (Bowmann and Gross, 1992); (b) a sharp but gradual drop of the lake from a very high level at about -117 m to a very low level at about -370 m; (c) substantial climatic changes in the Jordan valley during the Late Pleistocene from initially very wet conditions to extremely dry conditions. On these terraces - between -370 and -148 m - in-situ precipitated, calcareous stromatolites are preserved. Some form large, laminated, massive, head-like blocks others are finely laminated crusts. Since stromatolites are formed on algal mats, they are indicative of relatively shallow water conditions. Calcareous crusts less clearly laminated and more clotty in structure appear between -148 and -117 m. This may indicate (a) that the lake chemistry at high lake stands was less alkaline due to high fresh water input; or (b) that the wave action was stronger at the steep eastern shore of Lake Lisan, formed by Cambrian sandstones and dolomites. Dating stromatolites with 14C and U/Th and of the terraces sediments by OSL is in progress. - 137 -
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ANNUAL REPORT 2 0 0 6 FACULTY OF MA
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Annual Report 2006 Faculty 11 Mater
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Preface The year 2006 of the Depart
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difference of numerical and analyti
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Institute of Materials Science Phys
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Research Projects Bulk Amorphous Al
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el Dsoki, C.; Landersheim, V. ; Kau
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Das, J.; Kim, K. B.; Xu, W.; Wei, B
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Staff Members Head Prof. Dr. Jürge
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Zhou L.; Rixecker G.; Aldinger F.;
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concerned with the synthesis and ch
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Publications Fleissner, A.; Schmid,
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• Surface analysis The UHV-surfac
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T. Mayer, U. Weiler, E. Mankel and
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Thin films The Thin Film division w
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Berky, W.; Gottschalk, S.; Elliman,
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Guest Scientists Research Projects
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Hesse, S.; Zimmermann, J.; von Segg
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Structure Research The research in
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Research Projects Functional Advanc
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Dincer, I.; Elerman, Y.; Elmali, A;
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hexakis(imidazole)nickel(II)bis(for
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Chemical Analytics The chemical ana
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Collaborations The above mentioned
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Hoffmann, P.; Non-Invasive Identifi
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Ferroelectrics For this class of ma
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Materials Modelling The research ac
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Materials for Renewable Energies In
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Joint Research Laboratory Nanomater
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Collaborative Research Center (SFB)
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B7 P.I.: Prof. H. v. Seggern / Dr.
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The glass transition temperature (T
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transition allows to investigate at
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Relative density 1.00 0.95 0.90 0.8
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Fig. 2 shows the time dependencies
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Dielectric interface trap engineeri
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∆V C q th eff 12 −2 p ( VGS = 0
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Fig. 3: Schematic of the photovolta
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synthesis and analysis of interface
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Fig. 2: Resistivity vs temperature
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Fig. 2: X-ray appearance near-edge
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Capacity [mAhg -1 ] 700 600 500 400
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Texture investigations and field em
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