Zobrazeno 1 - 10
of 18
pro vyhledávání: '"D. G. McDonnell"'
Publikováno v:
Liquid Crystals. 15:123-150
A range of nematogenic materials which incorporate a 2,6-disubstituted naphthyl moiety and a terminal cyano-substituent have been synthesized by using palladium-catalysed cross-coupling procedures involving arylboronic acids and alkynylzinc reagents
Publikováno v:
ChemInform. 26
The use of two-dimensional CT reconstruction to demonstrate a vertical fracture of the condylar head
Publikováno v:
Dentomaxillofacial Radiology. 19:34-36
A case of vertical fracture of the condylar head is described. The history, investigation and treatment is outlined with emphasis on the use of two-dimensional CT reconstruction to demonstrate the fracture.
Autor:
G. W. Gray, D. G. McDonnell
Publikováno v:
Molecular Crystals and Liquid Crystals. 48:37-51
A facile synthesis of S-(+)-4-(2′-methylbutyl)phenol and its interaction with a number of different acids are used to provide a wide variety of new chiral nematic liquid crystals. These new cholesterogens display a range of liquid crystal and other
Autor:
G. W. Gray, D. G. McDonnell
Publikováno v:
Molecular Crystals and Liquid Crystals. 34:211-217
The helical rotary senses for a number of non-sterol cholesteric liquid crystals have been determined and from the results, a simple rule relating molecular structure, absolute configuration and twist sense is proposed. The rule has been used to pred
Publikováno v:
Liquid Crystals. 6:271-280
The change in the selective reflection spectra of cholesteric liquid crystals with shear is described, and the results indicate that, although it appears to be a promising technique for flow visualization in aerodynamic testing, the method is only su
Publikováno v:
Liquid Crystals. 6:515-523
The effect of lateral fluorine substituents on the dielectric properties of a range of nematic liquid crystals is reported. Measurements of dipole moments and electric permittivities have been made and used to calculate Kirkwood correlation factors o
Autor:
D. G. Mcdonnell, G. W. Gray
Publikováno v:
Molecular Crystals and Liquid Crystals. 53:147-166
A number of esters and other compounds containing a trans-1,4-substituted cyclohexane ring system-have been prepared, and the liquid crystal thermal stabilities of these new mesogens are discussed in relation to those of their analogues containing th
Publikováno v:
Liquid Crystals. 4:685-692
Two techniques for producing dense uniform bulk scattering in cells containing smectic A liquid crystals have been examined for use in a large area liquid crystal projection display. Textures obtained using both thermal pulses and by dynamic scatteri
Publikováno v:
Displays. 9:137-140
Two techniques for producing grey scale in a laser-addressed smectic liquid-crystal storage display are described. The performance of the methods are compared at different reduced temperatures with respect to smectic-to-nematic transition in cells wi