Franz-Heinrich Kreuzer
Wacker Chemie
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by Franz-Heinrich Kreuzer.
Molecular Crystals and Liquid Crystals | 1991
Norman Dr. Häberle; Wolfgang Dr. Haas; Franz-Heinrich Kreuzer
Abstract Cyclic liquid crystalline siloxanes (CLCS) are optical uniaxial positive (SA, N) and negative (N*) materials in accordance with calamitic structures. X-Ray measurements indicate, that the distances of SA layers correspond with the length of the monomer unit. In the case of mesogens with high polarity the distance is 1.7 fold the length of the monomer unit. A bundle model is proposed for CLC siloxanes.
Journal of Materials Chemistry | 1996
Eckhard Jakob; Franz-Heinrich Kreuzer; Norman Dr. Häberle; Dirk Kilian; W. Haase
Using dielectric spectroscopy in the frequency range 100 Hz to 13 MHz, the molecular dynamics of cyclic liquid-crystalline oligosiloxanes have been investigated. Up to two relaxation processes were found, depending on different molecular dipole components. The compounds were aligned and as well as temperature-dependent spectra, bias-field-dependent spectra were recorded to show clearly the behaviour of each component while aligned in the electric field. The influence of the ring size on the dielectric relaxation behaviour is described as well as the influence of the spacer length.
Journal of Chemical Research-s | 1998
Oliver Haak; Cheung-Bok Jeoung; Andreas Pawlik; Peter Boldt; Walter Grahn; Franz-Heinrich Kreuzer; Horst Leigeber; Hans-Peter Dr. Weitzel
In a systematic study on materials for holographic data storage, a wide variety of azo dyes of different shapes and optical properties were covalently bound to cholesteric liquid crystalline oligosiloxanes; some of these materials exhibit high holographic efficiency and/or sensitivity but no general correlation between the holographic writing efficiency and/or the sensitivity with the structure was found.
Archive | 1993
Christoph Dr. Müller-Rees; Robert Maurer; Jürgen Dr. Stohrer; Franz-Heinrich Kreuzer; Silvia Jung; Franz Csellich
Archive | 1993
Christoph Dr. Müller-Rees; Robert Maurer; Jürgen Dr. Stohrer; Franz-Heinrich Kreuzer; Silvia Jung; Franz Csellich
Archive | 1993
Christoph Dr. Müller-Rees; Robert Maurer; Jürgen Dr. Stohrer; Franz-Heinrich Kreuzer; Silvia Jung; Franz Csellich
Macromolecular Symposia | 1991
Franz-Heinrich Kreuzer; Robert Maurer; Peter Spes
Archive | 2000
Michael Kasch; Jürgen Dr. Küpfer; Franz-Heinrich Kreuzer
Archive | 1998
Horst Leigeber; Eckhard Hanelt; Franz-Heinrich Kreuzer
Archive | 2001
Adolf Gurtner; Franz-Heinrich Kreuzer; Horst Leigeber; Volker Dr. Stanjek