Dr. Rudolf Zentel Profile

Dr. Rudolf Zentel

SPIE Involvement:

Author

Publications (26)

Proceedings Article | 2 May 2012 Paper

Emission of Rhodamine B in PMMA opals for luminescent solar concentrators

Johannes Gutmann, Janina Posdziech, Marius Peters, Lorenz Steidl, Rudolf Zentel, Hans Zappe, Jan Christoph Goldschmidt

Proceedings Volume 8438, 84381O (2012) https://doi.org/10.1117/12.922681

KEYWORDS: Luminescence, Absorption, Photonic crystals, Solar concentrators, Rhodamine B, Polymethylmethacrylate, Reflection, Light scattering, Solar cells, Polymerization

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Proceedings Article | 11 February 2012 Paper

Towards micrometer sized core-shell actuators from liquid crystalline elastomers by a continuous flow synthesis

Eva-Kristina Fleischmann, Hsin-Ling Liang, Jan Lagerwall, Rudolf Zentel

Proceedings Volume 8279, 82790M (2012) https://doi.org/10.1117/12.913777

KEYWORDS: Particles, Liquid crystals, Liquids, Crystals, Microfluidics, Silicon, Capillaries, Polymers, Actuators, Microelectromechanical systems

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Proceedings Article | 11 September 2010 Paper

3D photonic crystals for photon management in solar cells

J. Üpping, A. Bielawny, C. Ulbrich, M. Peters, J. Goldschmidt, L. Steidl, R. Zentel, T. Beckers, A. Lambertz, R. Carius, U. Rau, R. Wehrspohn

Proceedings Volume 7756, 77560A (2010) https://doi.org/10.1117/12.859467

KEYWORDS: Photonic crystals, Solar cells, Absorption, Reflection, External quantum efficiency, Zinc oxide, Solar concentrators, Optical spheres, Reflectors, Crystals

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Proceedings Article | 18 May 2010 Paper

Micromorph silicon tandem solar cells with fully integrated 3D photonic crystal intermediate reflectors

J. Üpping, A. Bielawny, S. Fahr, C. Rockstuhl, F. Lederer, L. Steidl, R. Zentel, T. Beckers, A. Lambertz, R. Carius, R. Wehrspohn

Proceedings Volume 7725, 77250K (2010) https://doi.org/10.1117/12.857614

KEYWORDS: Zinc oxide, Photonic crystals, Silicon, External quantum efficiency, Tandem solar cells, Reflectors, Thin films, Atomic layer deposition, Crystals, Reflectivity

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Proceedings Article | 18 May 2010 Paper

Increasing fluorescent concentrator light collection efficiency by restricting the angular emission characteristic of the incorporated luminescent material: the 'Nano-Fluko' concept

J. Goldschmidt, M. Peters, J. Gutmann, L. Steidl, R. Zentel, B. Bläsi, M. Hermle

Proceedings Volume 7725, 77250S (2010) https://doi.org/10.1117/12.854278

KEYWORDS: Solar concentrators, Solar cells, Reflection, Absorption, Reflectors, Polymethylmethacrylate, Optical filters, Waveguides, Indium gallium phosphide, Structured photonic materials

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Proceedings Article | 18 May 2010 Paper

Inverted-opal photonic crystals for ultra light-trapping in solar cells

J. Üpping, C. Ulbrich, C.. Helgert, M. Peters, L. Steidl, R. Zentel, T. Pertsch, U. Rau, R. Wehrspohn

Proceedings Volume 7725, 772519 (2010) https://doi.org/10.1117/12.854573

KEYWORDS: Solar cells, Photonic crystals, Crystals, Quantum efficiency, Optical filters, Solar energy, Reflection, Absorption, Sun, Optical spheres

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Proceedings Article | 12 February 2010 Paper

Micro-actuators prepared from liquid crystalline elastomers in a microfluidic setup

Christian Ohm, Christophe Serra, Rudolf Zentel

Proceedings Volume 7618, 76180S (2010) https://doi.org/10.1117/12.848470

KEYWORDS: Particles, Liquid crystals, Crystals, Liquids, Polymers, Microfluidics, Actuators, Silicon, Microscopes, Spherical lenses

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Proceedings Article | 11 September 2007 Paper

Diffractive and energy selective photonic crystals for thin-film tandem solar cells

Andreas Bielawny, Paul Miclea, Ralf Wehrspohn, Andreas von Rhein, Carsten Rockstuhl, Marian Lisca, Falk Lederer, Birger Lange, Rudolf Zentel, Reinhard Carius

Proceedings Volume 6651, 665106 (2007) https://doi.org/10.1117/12.733084

KEYWORDS: Silicon, Photonic crystals, Diffraction, Thin films, Photons, Absorption, Crystals, Thin film solar cells, Optical spheres, Tandem solar cells

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Proceedings Article | 18 April 2006 Paper

Tunable defects in colloidal photonic crystals

Friederike Fleischhaker, André Arsenault, Nicolas Tétreault, Zhuo Wang, Vladimir Kitaev, Frank Peiris, Agustin Mihi, Hernan Miguez, Georg von Freymann, Ian Manners, Rudolf Zentel, Geoffrey Ozin

Proceedings Volume 6182, 61820L (2006) https://doi.org/10.1117/12.662316

KEYWORDS: Compound parabolic concentrators, Photonic crystals, Crystals, Water, Silica, Multilayers, Refractive index, Printing, Molecular self-assembly, Oxidation

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Proceedings Article | 18 April 2006 Paper

3D defect engineering in polymer opals

Birger Lange, Rudolf Zentel, Shalin Jhaveri, Christopher Ober

Proceedings Volume 6182, 61821W (2006) https://doi.org/10.1117/12.662046

KEYWORDS: Polymers, Polymerization, Lithography, Photonic crystals, Optical spheres, Crystals, Multilayers, Scanning electron microscopy, Refractive index, Photomasks

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Proceedings Article | 18 April 2006 Paper

Characterization of opal photonic hetero-crystals by light scattering

S. Romanov, J. Ye, R. Zentel, C. Sotomayor Torres

Proceedings Volume 6182, 61820G (2006) https://doi.org/10.1117/12.662571

KEYWORDS: Light scattering, Diffraction, Scattering, Crystals, Reflectivity, Dispersion, Photonic crystals, Signal attenuation, Interfaces, Photons

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Proceedings Article | 18 April 2006 Paper

Crystallization of silica opals onto patterned silicon wafer

Jianhui Ye, Rudolf Zentel, Sanna Arpiainen, Jouni Ahopelto, Fredrik Jonsson, Sergei Romanov, Clivia Sotomayor Torres

Proceedings Volume 6182, 61821U (2006) https://doi.org/10.1117/12.661660

KEYWORDS: Crystals, Silica, Optical spheres, Silicon, Semiconducting wafers, Reflectivity, Scanning electron microscopy, Photonic crystals, Optical testing, Refractive index

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Proceedings Article | 3 June 2005 Paper

Directionality of light emission in three-dimensional opal-based photonic crystals

S. Romanov, D. Chigrin, T. Maka, M. Muller, R. Zentel, C. Sotomayor Torres

Proceedings Volume 5825, (2005) https://doi.org/10.1117/12.605155

KEYWORDS: Tin, Photonic crystals, Light sources, Solids, Crystals, Signal attenuation, Molecules, Optical spheres, Anisotropy, Luminescence

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Proceedings Article | 3 June 2005 Paper

Light transport in hetero-opal photonic crystals

S. Romanov, C. Sotomayor Torres, M. Egen, R. Zentel

Proceedings Volume 5825, (2005) https://doi.org/10.1117/12.605210

KEYWORDS: Light scattering, Scattering, Interfaces, Laser scattering, Signal attenuation, Photons, Diffraction, Photonic crystals, Thin films, Radio propagation

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Proceedings Article | 15 September 2004 Paper

Light propagation in opal heterojunctions

Sergei Romanov, Dmitry Chigrin, Clivia Sotomayor-Torres, Nikolai Gaponik, Alexander Eychmueller, Andrey Rogach, Marc Egen, Rudolf Zentel

Proceedings Volume 5450, (2004) https://doi.org/10.1117/12.545280

KEYWORDS: Interfaces, Heterojunctions, Diffraction, Reflectivity, Dispersion, Crystals, Photonics, Radio propagation, Photonic crystals, Fabry–Perot interferometers

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Proceedings Article | 27 June 2002 Paper

Layer structure of free-standing smectic LC elastomer films

R. Koehler, U. Dietrich, J. Li, M. Loesche, Ralf Stannarius, C. Tolksdorf, Rudolf Zentel

Proceedings Volume 4759, (2002) https://doi.org/10.1117/12.472198

KEYWORDS: Polymers, X-rays, Silicon, Liquid crystals, Shape memory alloys, X-ray diffraction, Polymer thin films, Crystals, Ultraviolet radiation, Reflectivity

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Proceedings Article | 17 April 2000 Paper

Three-dimensional anisotropic photonic crystals working in the visible

Sergei Romanov, Torsten Maka, Cliva Sotomayor-Torres, Manfred Mueller, Rudolf Zentel

Proceedings Volume 3937, (2000) https://doi.org/10.1117/12.382810

KEYWORDS: Photonic crystals, Polymers, Composites, Polymethylmethacrylate, Crystals, Reflectivity, Refractive index, Optical spheres, Dispersion, Silica

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Proceedings Article | 5 October 1999 Paper

High-Tg multifunctional photorefractive polymer

Erik Hattemer, Rudolf Zentel, Erwin Mecher, Klaus Meerholz

Proceedings Volume 3799, (1999) https://doi.org/10.1117/12.363898

KEYWORDS: Polymers, Chromophores, Holography, Diffraction gratings, Photorefractive polymers, Diffraction, Composites, Four wave mixing, Absorption, Modulation

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Proceedings Article | 1 November 1996 Paper

Tricyanoquinodimethane-derived chromophores for second-order nonlinear optical polymers

Peter Boldt, Juergen Wichern, Stephan Zippel, Michael Doerr, Rudolf Zentel, Christoph Braeuchle, Roland Dietrich, Klaus Meerholz

Proceedings Volume 2852, (1996) https://doi.org/10.1117/12.256159

KEYWORDS: Chromophores, Polymers, Nonlinear optics, Electro optics, Absorption, Second-harmonic generation, Harmonic generation, Polymerization, Optical testing, Photonic devices

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Proceedings Article | 19 January 1996 Paper

Molecular tilt angle and order parameter of low molar mass ferroelectric liquid crystal using IR spectroscopy

Tatiana Perova, Antoni Kocot, Jagdish Vij, Rudolf Zentel

Proceedings Volume 2731, (1996) https://doi.org/10.1117/12.230645

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Proceedings Article | 5 October 1995 Paper

High Tg NLO-polymers by functionalization of reactive precursors

Michael Doerr, Rudolf Zentel, Peter Boldt, Juergen Wichern, Manfred Eich, Martin Sprave, Jan Vydra

Proceedings Volume 2527, (1995) https://doi.org/10.1117/12.222781

KEYWORDS: Polymers, Chromophores, Glasses, Systems modeling, Polymerization, Carbonates, Chemical reactions, Nitrogen, Absorption, Temperature metrology

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Proceedings Article | 24 April 1995 Paper

Pyroelectric studies on liquid crystals

Kent Skarp, Gunnar Andersson, Rudolf Zentel, H. Poths

Proceedings Volume 2408, (1995) https://doi.org/10.1117/12.207525

KEYWORDS: Polarization, Liquid crystals, Polymers, Temperature metrology, Amplifiers, Photonic integrated circuits, Sensors, Signal detection, Switching, Electro optics

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Proceedings Article | 23 September 1994 Paper

Electro-optical properties and poling stability of high glass transition polymers

Manfred Eich, Hanno Beisinghoff, Bengt Knoedler, Michael Ohl, Martin Sprave, Jan Vydra, M. Eckl, Peter Strohriegl, Michael Doerr, Rudolf Zentel, M. Ahlheim, M. Staehelin, B. Zysset, Julienne Liang, Regine Levenson, Joseph Zyss

Proceedings Volume 2285, (1994) https://doi.org/10.1117/12.187506

KEYWORDS: Polymers, Chromophores, Glasses, Waveguides, Electro optics, Refractive index, Reactive ion etching, Dielectric relaxation, Electro optic polymers, Temperature metrology

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Proceedings Article | 4 April 1994 Paper

Broadband dielectric spectroscopy on ferroelectric liquid crystalline polymers

A. Schoenfeld, Friedrich Kremer, H. Poths, Rudolf Zentel

Proceedings Volume 2175, (1994) https://doi.org/10.1117/12.172128

KEYWORDS: Polymers, Liquids, Crystals, Liquid crystals, Dielectrics, Dielectric spectroscopy, Molecular spectroscopy, Dielectric polarization, Dielectric relaxation, Ferroelectric polymers

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Proceedings Article | 16 December 1993 Paper

Second-order NLO main-chain polymers by polymerization of poled monomers

Manfred Eich, Michael Ohl, Rudolf Zentel, Wolfgang Schulz-Hanke

Proceedings Volume 2025, (1993) https://doi.org/10.1117/12.165244

KEYWORDS: Polymers, Polymerization, Nonlinear optics, Glasses, Chromophores, Dielectrics, Temperature metrology, Head, Crystals, Electrodes

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Proceedings Article | 14 January 1993 Paper

Second harmonic generation studies on novel NLO-polymers

Manfred Eich, Siegfried Ohl, Rudolf Zentel, Heike Baumann, Leonie Goebel, Hartmut Krueger, Werner Frank, Theo Tschudi

Proceedings Volume 1774, (1993) https://doi.org/10.1117/12.139172

KEYWORDS: Polymers, Nonlinear optics, Chromophores, Photopolymers, Process control, Temperature metrology, Harmonic generation, Glasses, Polymerization, Electrodes

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Showing 5 of 26 publications

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