Zobrazeno 1 - 10
of 62
pro vyhledávání: '"M. Giurgea"'
Publikováno v:
Liquid Crystals. 13:127-138
An analysis of the permitted structures for a cholesteric liquid crystal based on the continuum theory as a function of the anchoring conditions and the thickness of the liquid crystal layer is presented. A new type of bistability is found. The stabi
Publikováno v:
Europhysics Letters (EPL). 20:407-411
Some new results concerning the appearance of a periodic structure in a π/2-twist cell filled with MBBA under d.c. excitation are reported. This structure consists of rectilinear domains whose orientation varies with the applied voltage around the n
Autor:
G. Cristescu, M. Giurgea
Publikováno v:
Zeitschrift für Chemie. 7:360-361
Publikováno v:
Crystal Research and Technology. 20:875-878
Publikováno v:
Journal of Physics C: Solid State Physics. 7:1892-1897
The results of the simultaneous investigations of light scattering and ionic conductivity as a function of temperature are presented for NaCl crystals doped with divalent impurities for different thermal histories. Two types of light scattering maxim
Publikováno v:
Molecular Crystals and Liquid Crystals. 53:137-146
A bi-dimensional structure in MBBA is studied in the conduction region by microscopic observations using twist geometry cells with zero tilt angle at the electrodes. The distancedbetween equidistant discontinuities, perpendicular to the Williams doma
Publikováno v:
Zeitschrift für Physikalische Chemie. :139-146
Publikováno v:
Liquid Crystals. 3:285-297
The relaxation of the molecular orientation in the DAP effect has been studied experimentally after removal of the electric field, for different values of the applied field and for three quasi-homeotropic initial geometries. The main aspects of the r
Publikováno v:
Journal of Polymer Science: Polymer Physics Edition. 12:2399-2407
Dc conductivity measurements were performed as a function of temperature on unplasticized poly(vinyl chloride) and on PVC plasticized with various amounts of dioctylphthalate. The conductivity curves consist of two or three straight-line segments den
Publikováno v:
Molecular Crystals and Liquid Crystals. 71:65-76
A new type of instability is studied, which was previously found to arise in nematic liquid crystals with negative dielectric anisotropy in the dielectric region, at a threshold voltage lower than the chevron threshold. The instability can be observe