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6 Result(s)

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  1. No Access

    Article

    Arc Shape of High-Intensity Discharge Lamps: Simulation and Experiments

    A stationary compressible three-dimensional (3D) model of photothermal processes inside an arc tube of a high-intensity discharge lamp is developed on the basis of the finite element method. It takes plasma, e...

    J. Schwieger, B. Baumann, M. Wolff in International Journal of Thermophysics (2015)

  2. No Access

    Article

    Photoacoustic Spectroscopy Using a MEMS Microphone with Inter-IC Sound Digital Output

    In photoacoustic spectroscopy that is adopted for gas sensing, microphones are usually used to detect the pressure variation inside the sample cell. The application of a new commercial inter-integrated circuit...

    H. Bruhns, A. Marianovich, M. Wolff in International Journal of Thermophysics (2014)

  3. No Access

    Article

    Effect of pseudohalides in pentadentate-iron(III) complexes studied by DFT and Mössbauer spectroscopy

    Mononuclear iron complexes in which the iron(III) ion is coordinated by a pentadentate Schiff base ligand L5 with two phenolate, two imino and one amino group can exhibit a spin crossover. In this contribution ex...

    M. Wolff, C. Krüger, P. Homenya, L. Heyer, R. Saadat, B. Dreyer… in Hyperfine Interactions (2014)

  4. No Access

    Article

    Shape-Optimized Photoacoustic Cell: Numerical Consolidation and Experimental Confirmation

    The signal of photoacoustic sensors depends considerably on the shape of the sample cell. Taking advantage of acoustical resonances results in a signal boost and enables highly sensitive analyzers with low det...

    M. Wolff, B. Kost, B. Baumann in International Journal of Thermophysics (2012)

  5. No Access

    Article

    Photoacoustic CO2 sensor based on a DFB diode laser at 2.7 μm

    We present a new detection scheme for carbon dioxide (CO2) based on a custom-made room temperature distributed feedback (DFB) diode laser at 2.7 μm, currently representing one of the lasers with the highest em...

    M. Wolff, M. Germer, H. G. Groninga… in The European Physical Journal Special Topi… (2008)

  6. No Access

    Article

    Investigation of sheared liquids by neutron backscattering and reflectivity

    We have investigated by neutron scattering structural and dynamical properties of water solutions of the triblock copolymer P85 under shear. To this end a shear cell that suits the requirements for neutron bac...

    M. Wolff, A. Magerl, R. Hock, B. Frick, H. Zabel in Applied Physics A (2002)