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Gregori, G.; Kleebe H.-J.; Sorarù, G.D.; Energy-filtered tem study of Ostwald ripening of Si nanocrystals in SiCO glasses, J. Am. Ceram. Soc., 89 [5] (2006) 1699. Gregori, G.; Kleebe, H.-J.; Blum, Y.D.; Babonneau, F.; Evolution of C-rich SiOC ceramics, part-II. Characterization by high lateral resolution techniques: electron energy-loss spectroscopy, high-resolution TEM and energy-filtered TEM, Int. J. Mat. Res., 97 [6] (2006), 710. Guo, L.; Singh, R.N.; Kleebe, H.-J.; Growth of boron-rich nanowires by chemical vapor deposition (CVD), J. Nanomat., 1 [58237] (2006) 1. Kleebe, H.-J.; Gregori, G.; Babonneau, F.; Blum, Y.D.; MacQueen, D.B.; Masse, S.; Evolution of C-rich SiOC ceramics, part-I. Characterization by integral spectroscopic techniques: solid-state NMR and Raman spectroscopy, Int. J. Mat. Res., 97 [6] (2006), 699. Lehner, W.; Kleebe, H.-J.; Ziegler, G.; Variation of sintering parameters at an early stage of densification affecting β-Si3N4 microstructure, J. Eur. Ceram. Soc., 26 [2] (2006) 201. - 130 -
Technical Petrology with emphasis in Low Temperature Petrology The scientific and educational field of this 35 years young branch within the applied geosciences is based on indispensable knowledge in magmatic, metamorphic (greenschist facies to ultra-metamorphism) low-temperature (studies in diagenesis and sub-greenschist facies metamorphism) and hydrothermal petrology but also in geothermal geology and sediment petrography. On these fundamentals it is possible to evaluate the mechanical, chemical and physical properties of rocks and the determination for their technical use in engineering geology, in environmental sciences, in geo-material and thermal-energy sciences. The determination of the genetic history and evolution of rocks through time and space gives, e.g., basic information on the study of rock and ore deposits for prospection and exploitation interests. To understand mineralization, re-crystallisation and petrogenesis of rocks an important effort is focussed on tectono-thermal research, tectonophysics and structural geology (from the kilometre to nanometre scale). Furthermore, many natural processes are catalytically controlled by deformation. A better understanding of these processes can be recorded from deformation versus crystallisation and deformation versus metamorphism/ heating studies in the field and by experimental simulations. Therefore technical petrology is strongly field-oriented and linked to mineralogy, structural geology and also to geochemistry. Technical petrology in our department will be centred on low-temperature petrology with strong relations to applied mineralogy (geomaterial science), applied sedimentology and geothermal science, three other fields of principal interest at the TU Darmstadt. Low Temperature Petrology covers a broad field of studies: - on diagenesis with application in hydrocarbon, hydrothermal and geothermal exploration, - on clay and carbonaceous materials related with applied organic and clay petrology studies, - on maceral analysis of coals, - on sorption properties of carbonaceous and clay materials, - on the determination of graphitisation nano- and microstructures (refractory quality), - on the improvement of forward numerical geothermal, and maturity, and basin-analysis models (studies on hydrocarbon and fluid migration) - or on the synthesis of graphite structures and organic matter maturity related to technical aspects, - on recognizing of soot and carbon black in filtering installations or the thermal resistance of organic particles among other applications. It is important to understand the chemical and physical parameters of natural systems to be able to recognize the differences caused by anthropogenic changes. In the low-temperature range, neoformation of mesoscopic and macroscopic phases is very rare and the minerals to be studied have a very small grain-size. Also stable thermodynamic conditions are scarce and metastable phases and chemical disequilibria conditions are very common. Therefore a broad analytical spectrum must be applied. In the FG Technical Petrology, general microscopy (MPV coal reflection microscopy, fluorescence microscopy, transmitted light microscopy in the Joint Research Microscopy Laboratory, installed in 2004 and supported by the Mineralogisch Petrographisches Institut Basel, CH) and basically XRD powder and texture studies (Clay and XRD Laboratory, installed in 2005) can be combined with ICP-AES, TOC, AAS, AOX and gas chromatography (GC-ECD, GC-MS) in the Organic Geo-chemical Laboratory (recently installed with thankful help by the - 131 -
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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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