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    Chapter and Conference Paper

    Lowering the Cross Correlation between Different Shape Parameters of the Inverse Grating Problem in Coherent Fourier Scatterometry

    Angular Fourier Scatterometry techniques to solve inverse-grating problems have been widely used in semiconductor metrology since the initial work by den Boef et al. [1] because it is simple, fast and robust a...

    S. Roy, N. Kumar, S. F. Pereira, H. P. Urbach in Fringe 2013 (2014)

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    Chapter and Conference Paper

    A Comparison of Enthalpy and Temperature Methods for Melting Problems on Composite Domains

    In optical rewritable recording media, such as the Blu-ray Disc, amorphous marks are formed on a crystalline background of a phase-change layer, by means of short, high power laser pulses. It is of great impor...

    J.H. Brusche, A. Segal, C. Vuik, H.P. Urbach in Numerical Mathematics and Advanced Applica… (2006)

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    Chapter

    Hybrid Recording

    For conventional longitudinal magnetic disk recording the maximum attainable areal bit density is expected to reach its physical limits around 100 Gbit/inch2 [1]. In laboratory demonstration systems this density ...

    R. Coehoorn, S. R. Cumpson, J. J. M. Ruigrok… in Magnetic Storage Systems Beyond 2000 (2001)

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    Chapter

    Nonlinear Hyperbolic Systems in Chromatography

    The mathematical theory of nonlinear hyperbolic systems is applied to the modelling of chromatography. The elegant ω or h transformation which can be applied to the ideal Langmuir model of chromatography, is expl...

    H. P. Urbach in Proceedings of the Sixth European Conferen… (1992)

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    Chapter and Conference Paper

    On-line manufacturing of Si solar cells compatible with high speed Si-ribbon growth

    For the terrestrial photovoltaic application in the gigawatt range new on-line processing steps are necessary. Applying a new production process for the pn-junction large area (10 cm x 10 cm) mono-crystalline ...

    J. G. Grabmaier, H. P. Urbach… in Tenth E.C. Photovoltaic Solar Energy Confe… (1991)

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    Chapter and Conference Paper

    A Functional Analytic Approach to an Optimization Problem of Hydrodynamic Propulsion

    Several problems in the optimization theory of hydrodynamic propulsion are also of interest to the mathematician. The aim of the research is to determine for a given propulsive device such as a propeller or a ...

    H. P. Urbach in Trends in Applications of Mathematics to Mechanics (1988)

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    Chapter and Conference Paper

    Removal of Carbon and SiC from Silicon Prepared by Advanced Carbothermic Reduction

    High-purity silica and carbon were employed as starting materials to produce solar-grade silicon by carbothermic reduction. To remove carbon and SiC-particles from the silicon melt, the p-type material was sub...

    H. A. Aulich, K.-H. Eisenrith… in Seventh E.C. Photovoltaic Solar Energy Con… (1987)

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    Chapter and Conference Paper

    Production of Solar Grade Silicon in an Arc Furnace Using High Purity Starting Materials

    The carbothermic reduction of silica has been adopted to produce solar-grade silicon using high-purity raw materials. Inexpensive and abundant quartz sand is purified by fusing it with glass-forming oxides to ...

    H. A. Aulich, W. Dietze, K.-H. Eisenrith… in Fourth E.C. Photovoltaic Solar Energy Conf… (1982)