Zobrazeno 1 - 10
of 82
pro vyhledávání: '"Alfred Saupe"'
Autor:
Alfred Saupe, Antal Jakli
Publikováno v:
Journal of Applied Physics. 82:2877-2880
We describe a new technique to prepare cells of smectic C* films with a uniform bookshelf texture that can be bistably switched. This is achieved with a homeotropic surface coating with weak anchoring properties. The surface of one plate was modulate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3f6440f42e31eb2c00fd47e10c064d8
https://doi.org/10.1063/1.366120
https://doi.org/10.1063/1.366120
Autor:
Sung-Sik Pak, Alfred Saupe
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 300:273-281
This study focuses on the effect of polyethylene oxide (PEO) on the elastic properties of the micellar nematic formed in cesium perfluorooctanoate (CsPFO) water mixtures. We used PEO with molecular weights of 100,000 and 300,000 and prepared samples
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::abbeec44c02782cc1f774761e4d19de1
https://doi.org/10.1080/10587259708042353
https://doi.org/10.1080/10587259708042353
Autor:
Alfred Saupe, Antal Jakli
Publikováno v:
Liquid Crystals. 22:309-316
We have synthesized and studied trisbenzocyclononenes carrying six chiral side chains. They are pyramidic shaped molecules exhibiting columnar mesophases. The optical and electrooptical effects of this chiral pyramidic compound have been studied. A h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::43c3663c05aceea0fea12143cfa25add
https://doi.org/10.1080/026782997209379
https://doi.org/10.1080/026782997209379
Publikováno v:
Journal of Materials Chemistry. 7:2223-2229
Discotic cholesteric phases with extremely small pitches were obtained with cellobiose derivatives as chiral dopants. These binary mixtures tend to form up to three distinct blue phases. An interesting property of these mixtures is that the blue phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f9d47bc437a9f34a71049cc647a7bd90
https://doi.org/10.1039/a703272b
https://doi.org/10.1039/a703272b
Autor:
Alfred Saupe, Antal Jakli
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 263:103-111
It is known that ferroelectric liquid crystal cells vibrate mechanically under the effect of ac fields. The vibrations are mainly due to the backflow and electroclinic effects. For small director oscillations the effect is mainly linear and goes with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::03ae2f8070b18bf2d28adfdcd4c33987
https://doi.org/10.1080/10587259508033574
https://doi.org/10.1080/10587259508033574
Publikováno v:
Journal of Applied Physics. 72:3161-3164
Polymer dispersions were made by photoinduced polymerization of 4,4’‐bisacryloyl‐biphenyl in liquid crystal 4‐4’‐cyano pentyl biphenyl as nematic solvent. Samples were prepared with 0.5, 1, and 1.5 wt % monomer. The polymerization was don
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::63e1e909863c8abb7f53eea464d0d31b
https://doi.org/10.1063/1.351478
https://doi.org/10.1063/1.351478
Autor:
Alfred Saupe, Antal Jakli
Publikováno v:
Physical Review A. 45:5674-5679
We observed a spontaneous transition from a vertical chevron texture to a striped texture (striped booshelf texture) in a surface-stabilized film of ferroelectric liquid crystal mixture (ZLI 4237-000, from E. Merck). The transition takes place gradua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2f37c904d2ea383559998146343b689
https://doi.org/10.1103/physreva.45.5674
https://doi.org/10.1103/physreva.45.5674
Autor:
Alfred Saupe, Antal Jakli
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 222:101-109
Smectic A films with a positive dielectric anisotropy can be switched to homeotropic textures by application of sufficiently high AC electric fields. They can relax to a light scattering state when the field is removed. The transition between the hom
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16bebf38bf58a018db8d0e0815fc06f2
https://doi.org/10.1080/15421409208048685
https://doi.org/10.1080/15421409208048685
Publikováno v:
Physica A: Statistical Mechanics and its Applications. 174:195-207
The formation of micellar nematics is discussed with emphasis on the transitions between nematic phases and nematic-smectic transitions. Phase diagrams for MTAB/l-decanol/D,O systems show a direct transition between uniaxial nematics. Electrical cond
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b37f4e73abee9cc0dd3801ac131d2ca
https://doi.org/10.1016/0378-4371(91)90424-b
https://doi.org/10.1016/0378-4371(91)90424-b
Publikováno v:
Molecular Crystals and Liquid Crystals. 198:331-340
Polystyrene polymers (M.W. - 2700) were dissolved in a low molecular weight nematic mixture E63 (E. Merck) in different concentrations, and studied over a broad temperature range. The rotational viscosities, γb of the mixtures were measured by using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b18afe2ce1dbf9b867be971d564370be
https://doi.org/10.1080/00268949108033409
https://doi.org/10.1080/00268949108033409