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Prof. Dr. W. Steffen

  • Haghighi, M., M. A. Plum, G. Gantzounis, H.-J. Butt, W. Steffen, G. Fytas:
    Plasmon-Enhanced Dynamic Depolarized Light Scattering.
    J. Phys. Chem. C, 2013, 117, 8411−8419.
  • Kolman, K., W. Steffen, G. Bugla-Płoskonska, A. Skwara, J. Pigłowski, H.-J. Butt, A. Kiersnowski:
    Exfoliation of montmorillonite in protein solutions.
    Journal of Colloid and Interface Science,2012, 374, 135–140.
  • Plum, M.A., B. Menges, G. Fytas, H.-J. Butt, W. Steffen:
    Resonance enhanced dynamic light scattering.
    Rev. of Scientific Instruments, 2011, 82, 015102

  • Plum, M.A., S. Dias Borges Vianna, A. Unger, R. F. Roskamp, H.-J. Butt, B. Menges, W. Steffen:
    Probing dynamics near surfaces: waveguide enhanced dynamic light scattering.
    Soft Matter, 2011, DOI: 10.1039/C0SM00871K

  • Plum, M.A., J. Ricka, H.-J. Butt, W. Steffen:
    Anisotropic hindered motion close to an interface studied by resonance-enhanced dynamic light scattering.
    New Journal of Physics, 2010, 12, 103022

  • Dawson, K. J., K. L. Kearns, L. Yub, W. Steffen, M. D. Ediger:
    Physical vapor deposition as a route to hidden amorphous states
    PNAS, 2009, 106, 15165–15170

  • Nenov, S., Hoffmann, M. S., Steffen, W. et al:
    Fluorous Miniemulsions: A Powerful Tool to Control Morphology in Metallocene-Catalyzed Propene Polymerization.
    Journal Of Polymer Science Part A-Polymer Chemistry, 2009, 47, 1724-1730

  • Plum, M.A., W. Steffen, G. Fytas, W. Knoll, B. Menges:
    Probing dynamics at interfaces: resonance enhanced dynamic light scattering
    Optics Express, 2009, 17, 10364--10371

  • Cheng, Y. J., L. Zhi, W. Steffen, J. S. Gutmann: Surface-Supported, Highly Ordered Macroporous Crystalline TiO2 Thin Films Robust up to 1000 degrees C.
    Chem. Materials, 2008, 20, 6580-6582

  • Le Grand, A., Dreyfus, C., Bousquet, C., Steffen, W. et al.: Scaling of the structural relaxation in supercooled fragile liquids and simulated liquid silica.
    Xvth International Congress On Rheology - The Society Of Rheology 80th Annual Meeting, 2008, 1027, 1473

  • CG. CLARC, RJ. WENZEL, EV. ANDREITCHENKO, W. STEFFEN, R. ZENOBI, K. MÜLLEN: Solvophobically-driven 3-D self-assembly of "exploded''-type polyphenylene dendrimers.
    New Journal of Chemistry 2007, 31(7) 1300-1306

  • G. TOMMASEO, G. PETEKIDIS, W. STEFFEN, G. FYTAS, A. B. SCHOFIELD, N. STEFANOU: Hypersonic Acoustic Excitations in Binary Colloidal Crystals: Big versus Small Hard Sphere Control.
    J. Chem. Phys. 2007, 126, 014707

  • C. G. CLARK, JR., R. J. WENZEL, E. V. ANDREITCHENKO, W. STEFFEN, R. ZENOBI, K. MÜLLEN: Controlled MegaDalton Assembly with Locally Stiff but Globally Flexible Polyphenylene Dendrimers
    JACS 2007, 129, 3292

  • M. WIND, R. GRAF, S. RENKER, H. W. SPIESS, W. STEFFEN: Structure of Amorphous Poly-[ethylmethacrylate]: A Wide-Angle X-Ray Scattering Study,
    J. Chem. Phys., 122, 014906 (2005).

  • O. PRIADLOVA, W. CHENG W. STEFFEN, J. GUTMANN, G. Fytas: Probing Micromechanical Behavior of Semicrystalline Polypropylene Films by Brillouin Spectroscopy,
    Macromolecules, 38, 2321-2326, (2005).

  • W. CHENG, J. J. WANG, U. JONAS, W. STEFFEN, G. FYTAS, R. S. PENCIU, E. N. ECONOMOU: The Spectrum of vibration modes in soft opals;
    J. Chem. Physics, 123, 121104 (2005).

  • W. STEFFEN, U. SCHERF, L. BERGER, J. KADAM, A. SCHLEWING, AND R. GÜNTNER: Polymerization in supercritical carbon dioxide: surfactants, micelle formation, and heterophase polymerization;
    ELSEVIER, Amsterdam, in „Supercritical CO2 as Reaction Medium and Solvent“, ed. G. Brunner, 533, (2004).

  • T. THURN-ALBRECHT,1 F. ZONTONE, G. GRÜBEL, W. STEFFEN, P. MÜLLER-BUSCHBAUM, AND A.PATKOWSKI: Photon Correlation Spectroscopy with High Energy Coherent X-Rays;
    ESRF-Highlights (2004).

  • H. KRIEGS, W. STEFFEN, G. FYTAS, G. MONACO, C. DREYFUS, P. FRAGOULI, M. PITSIKALIS, N. HADJICHRISTIDIS: High Frequency Acoustic Excitations in Ordered Diblock Copolymer studied by Inelastic X-ray Scattering,
    J. Chem. Phys., 121, 2376 (2004).

  • L. COMEZ, S. COREZZI, D. FIORETTO, H. KRIEGS, A. BEST, W. STEFFEN: Slow dynamics of salol: a pressure and temperature dependent light scattering study;
    Phys. Rev. E, 42, 011504 (2004).

  • G.TOMMASEO, M. LESCANNE, W.STEFFEN, G.FYTAS, M.STAMM: Elastic excitations in polycarbonate membranes,
    J. Polym. Sci. Part B: Polym Phys., 42, 3311 (2004).

  • C. DREYFUS, A. LE GRAND, J. GAPINSKI, W. STEFFEN AND A. PATKOWSKI: Scaling PROPERTIES of the  relaxation time in supercooled fragile organic liquids,
    European Physical Journal B, 42, 309 (2004).

  • G. KALAMPOUNIAS AND S. N. YANNOPOULOS, W. STEFFEN, L. I. KIRILLOVAA AND S. A. KIRILLOV: J. Chem. Phys., 118, 8340 (2003).

  • G. KALAMPOUNIASA, S. A. KIRILLOV, W. STEFFEN AND S. N. YANNOPOULOS: Raman SPECTRA and microscopic dynamics of bulk and confined salol,
    Journal of Molecular Structure, 651-653, 475 (2003).

  • C. DREYFUS, A. AOUADI, J. GAPINSKI, M. MATOS-LOPEZ, W. STEFFEN, A. PATKOWSKI: R.M. PICK, Phys. Rev. E, 68, 1204 (2003).

  • T. THURN-ALBRECHT, F. ZONTONE, G. GRÜBEL, W. STEFFEN, P. MÜLLER-BUSCHBAUM, A. PATKOWSKI: Photon Correlation Spectroscopy with High Energy Coherent X-Rays;
    Phys. Rev. E, 68, 031407 (2003).

  • R.S. PENCIU, M. KAFESAKI, G. FYTAS, E.N. ECONOMOU, W. STEFFEN, A. HOLLINGSWORTH, W.B. RUSSEL: Phonons in Colloidal Crystals, Europhys. Lett., 58, 699 (2002)

  • E.W. FISCHER, A. BAKAI, A. PATKOWSKI, W. STEFFEN, L. REINHARDT: Heterophase Fluctuations in supercooled Liquids and Polymers,
    J. Non-Cryst. Solids, 584, 307-310 (2002).

  • L. COMEZ, D. FIORETTO, H. KRIEGS, W. STEFFEN: Temperature and Pressure Dependence of the a-Relaxation on a Prototype Glass Former: Salol,
    Phys. Rev. E, 66, 501 (2002).

  • A. PATKOWSKI, E.W. FISCHER, W. STEFFEN, H. GLÄSER, M. BAUMANN, T. RUTHS, G. MEIER: Unusal features of long-range density fluctuations in glass forming organic liquids. A Rayleigh and Rayleigh-Brillouin licht scattering study,
    Phys. Rev. E., 63, 6909 (2001).

  • L.COMEZ, D.FIORETTO, L.PALMIERI, L.VERDINI, P.A.ROLLA, J. GAPINSKI, A.PATKOWSKI, W. STEFFEN, AND E.W. FISCHER: Dielectric and Light Scattering Analysis of the alpha-Relaxation of an Epoxy System.
    Proceedings of DRP conference; SPIE, Vol 4017, pg 120 (2000).

  • A. AOUADI , C. DREYFUS, M. MASSOT, R. M. PICK, T. BERGER, W. STEFFEN, A. PATKOWSKI AND C. ALBA-SIMIONESCO: Light Scattering Study of the Liquid Glass Transition of Meta-Toluidine,
    J. Chem. Phys, 112, (2000) 9860.

  • T. BERGER, W. STEFFEN: Optical Flowthrough High Pressure Cell for Light Scattering Investigations,
    Rev. Sci. Instrum., 71 (2000) 2467.

  • A. PATKOWSKI, TH. THURN-ALBRECHT, E. BANACHOWICZ, W. STEFFEN, P. BÖSECKE, T. NARAYANAN, E.W. FISCHER: Long Range Density Fluctuations in ortho-Terphenyl as Studied by Means of Ultra Small Angle X-ray Scattering,
    Phys. Rev. E, 61 (2000) 6909.

  • E. ECKSTEIN, J. QIAN, R. HENTSCHKE, T. THURN-ALBRECHT, W. STEFFEN, AND E.W. FISCHER: X-Ray Scattering study and Molecular Simulation of Glass Forming Liquids: Propylene Carbonate and Salol;
    J. Chem. Phys., 113, 4751 (2000).

  • T. BERGER, B. MCGHEE, U. SCHERF, W. STEFFEN: Poly[vinyl pyrrolidone] Synthesis in Supercritical Carbon Dioxide with a Diblock Copolymer Stabilizer,
    Macromolecules, 33, 3505 (2000).

  • R.S. PENCIU, G. FYTAS, E.N. ECONOMOU, W. STEFFEN, S.N. YANNOPOULOS: Acoustic excitations in suspensions of soft colloids,
    Phys. Rev. Lett., 85, 4622 (2000).

  • T. THURN ALBRECHT, G. MEIER, P. MÜLLER-BUSCHBAUM, A. PATKOWSKI, W. STEFFEN, G. GRÜBEL, D.L. ABERNATHY, O. DIAT, M. WINTER, M.G. KOCH, M.T. REETZ: Structure and dynamics of surfactant stabilized aggregates of paladium nanoparticles under dilute and semidilute conditions - a study using static and dynamic X-ray Scattering.
    Physical Review E., 59[1 Part B] (1999), 642.

  • GAPINSKI J., STEFFEN W., PATKOWSKI A., SOKOLOV AP., KISLIUK A., BUCHENAU H., RUSSINA M., MEZEI F., SCHOBER H.: Spectrum of fast dynamics in glass forming liquids: Does the "knee" exist?.
    J. Chem. Phys., 110, (1999), 2312.

  • T. BERGER, W. STEFFEN: Characterization of Polydimethylsiloxane in sc-CO2 by Light Scattering.
    Proc. of 6th Meeting on Supercritical Fluids: Chemistry and Materials, Inst. Nat. Polytechn. de Lorraine (1999) 401.

  • COMEZ L., FIORETTO, D. L. VERDINI, P.A. ROLLA, J. GAPINSKI, A. PATKOWSKI, W. STEFFEN, E.W. FISCHER: Light scattering study of a supercooled epoxy resin. Physical Review E, 60, 3086 (1999).

  • T. BERGER AND W. STEFFEN: Light Scattering Investigations of Polydimethylsiloxane in sc-CO2.
    In: Wiss. Ber. D. Forschungszentrums Karlsruhe, Proc. of the “International Meeting on High Pressure Chemical Engineering”, (1999)

  • DREYFUS C.; AOUADI A.; R.M PICK; T. BERGER; A. PATKOWSKI; STEFFEN W.: Light scattering Measurement of shear viscosity in a fragile glassforming liquid.
    Europhysics Lett., 42, (1998), 55.

  • PATKOWSKI A.; STEFFEN W.; E.W. FISCHER: Comments on "Relaxation dynamics in orto-terphenyl: comparing betaK from extended mode coupling theory and phenomenological analyses".
    J. Non Cryst. Solids, 268, 235-237 (1998).

  • FLOUDAS G.; STEFFEN W.: N. HADJICHRISTIDIS: Order-disorder transition in a poly[styrene-b-isoprene] diblock copolymer at hypersonioc frequencies.
    Europhysics Letters, 44 (1998), 37.

  • A PATKOWSKI, W. STEFFEN, H. NILGENS, E.W. FISCHER, AND R. PECORA: DEPOLARIZED DYNAMIC LIGHT SCATTERING ON THREE LOW MOLECULAR WEIGHT GLASS FORMING LIQUIDS: A TEST OF THE SCATTERING MECHANISM,
    J. CHEM. PHYS., 106 (1997), 8401.

  • K.L. NGAI, A. SOKOLOV, AND W. STEFFEN: Correlations between Boson Peak Strength and Characteristics of Local Segmental Relaxation in Polymers,
    J. Chem. Phys., 107 (1997), 5268.

  • A. AOUADI, M.J. LEBON, C. DREYFUS, W. STEFFEN, A. PATKOWSKI, AND R.M. PICK: Light scattering study of 1-4 cis-trans polybutadiene,
    J. Phys. Condens. Matter, 9 (1997), 1-18.

  • KÖHLER, W.; FYTAS, G.; STEFFEN, W.; REINHARDT, L.: Thermal diffusivity and structural relaxation in a supercooled liquid by a holographic grating technique.
    Journal of Chem. Phys., 104 (1996), 248.

  • T. ALBRECHT, W. STEFFEN, A. PATKOWSKI, G. MEIER, E.W. FISCHER, G. GRÜBEL, D. ABERNATHY: Photon Correlation Spectroscopy of Colloidal Palladium Using a Coherent X-ray Beam.
    Phys. Rev. Lett., 77 (1996), 5437.

  • W. STEFFEN, E.W. FISCHER, AND A. PATKOWSKI: Static and dynamic Light Scattering of Supercooled Fluids,
    World Sci. Publ. Co, Series in Contemporary Chemical Physics - Vol. 12 (1996), 159.

  • E. RÖSSLER, A.P. SOKOLOV, AND W. STEFFEN: Dynamics of Fragile and Strong Glass Formers,
    World Sci. Publ. Co, Series in Contemporary Chemical Physics - Vol. 12 (1996), 379.

  • A.P. SOKOLOV, W. STEFFEN, E. RÖSSLER: Dynamics of glass forming liquids at high temperatures: A General Scenario,
    J. Phys. Cond. Matter, 8 (1996) 9587.

  • CHU, B.; YING, Q. C.; YEH, F. J.; PATKOWSKI, A.; STEFFEN, W.; FISCHER, E. W.: An X ray photon correlation experiment. Langmuir 11 (1995), 1419.

  • SOKOLOV, A.P.; STEFFEN, W.; RÖSSLER, E.: High temperature dynamics in glass forming liquids.
    Phys. Rev. E, 52 (1995) 5105.

  • SOKOLOV, A.P.; BUCHENAU, U.; STEFFEN, W.; FRICK, B.; WISCHNEWSKI, A.: Comparison of Raman and neutron scattering data for glass forming systems.
    Phys. Rev. B., 52 (1995), R9815.

  • STEFFEN, W.; PATKOWSKI, A.; GLÄSER, H.; MEIER, G.; FISCHER, E.W.: Depolarized-light-scattering study of orthoterphenyl and comparison with the mode-coupling model.
    Phys. Rev. E, 49 (1994) 2992.

  • STEFFEN, W.; ZIMMER, B.; PATKOWSKI, A.; MEIER, G.; FISCHER, E.W.: Depolarized light scattering studies of the boson peak and transversal phonons in a glass-forming-liquid: OTP.
    J. Non-Cryst. Solids, 172-174 (1994), 37 .

  • PATKOWSKI, A.; STEFFEN, W.; MEIER, G.; FISCHER, E.W.: Mode-coupling and phenomenological analysis of the depolarized light scattering spectra of ortho-terphenyl.
    J. Non-Cryst. Solids, 52, 172-174 (1994).

  • BAHAR, I.; ERMAN, B.; FYTAS, G.; STEFFEN, W.: Intramolecular contributions to stretched-exponential relaxation behavior in polymers.
    Macromolecules, 27, (1994), S. 5200.

  • PATKOWSKI, A.; FISCHER, E. W.; GLAESER, H.; MEIER, G.; NILGENS, H.; STEFFEN, W.: Light scattering studies of a glass-forming liquid near Tg.
    Prog. Colloid Polym. Sci., 91 (1993), S. 35-8.

  • STEFFEN, W.; MEIER, G.; PATKOWSKI, A.; FISCHER, E.W.: Depolarized light scattering spectroscopic study of OTP dynamics above Tg: a mode coupling analysis approach.
    Physica A, 201 (1993), 300.

  • FLOUDAS, G.; STEFFEN, W.; FISCHER, E.W.; BROWN, W.: Solvents and polymer dynamics in concentrated polystyrene/toluene solutions.
    J. Chem. Phys., 99 (1993), 695.

  • FLOUDAS, G.; STEFFEN, W.; GIEBEL, L.; FYTAS, G.: Polymer and solvent dynamics in a polystyrene/di-2-ethylhexyl phthalate solution.
    Prog. Colloid Polym. Sci., 91 (1993), 124-126.

  • FISCHER, E. W.; DONTH, E.; STEFFEN, W.: Temperature dependence of characteristic length for glass transition.
    Phys. Rev. Lett., 68 (1992), S. 2344-6.

  • STEFFEN, W.; PATKOWSKI, A.; MEIER, G.; FISCHER, E. W.: Depolarized dynamic light scattering studies of ortho-terphenyl dynamics above Tg.
    J. Chem. Phys., 96 (1992), 4171.

  • KIVELSON, D.; STEFFEN, W.; MEIER, G.; PATKOWSKI, A.: A possible molecular structural indicator of the liquid-glass transition.
    J. Chem. Phys., 95 (1991), S. 1943.

  • FISCHER, E. W.; MEIER, G.; RABENAU, T.; PATKOWSKI, A.; STEFFEN, W.; THOENNES, W.: Density fluctuations around the glass transition of low-molecular-weight glass-forming liquids.
    J. Non-Cryst. Solids, 131-133 (1991), 134-138.

  • FLOUDAS, G.; STEFFEN, W.; FYTAS, G.: Solvent reorientation in polystyrene/A1248 and polystyrene/DOP systems.
    J. Phys.: Condens. Matter, 2 (1990), S. SA307-SA312).