Browsing by Author "Luckhurst, G.R."

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Dielectric, calorimetric and mesophase properties of 1 ''-(2 ',4-difluorobiphenyl-4 '-yloxy)-9 ''-(4-cyano-biphenyl-4 '-yloxy) nonane: an odd liquid crystal dimer with a monotropic mesophase having the characteristics of a twist-bend nematic phase

Sebastian Ugarteche, Nerea; López Pérez, David Orencio; Robles Hernández, Beatriz; de la Fuente, M.R.; Salud Puig, Josep; Pérez Jubindo, M.A.; Dunmur, D.A.; Luckhurst, G.R.; Jackson, D. J. B. (2014-10-21)
Article
Restricted access - publisher's policy
This paper reports a novel liquid crystal phase having the characteristics of a twist-bend nematic phase formed by a non-symmetric ether-linked liquid crystal dimer. The dimer 1 ''-(2',4-difluorobiphenyl-4'-yloxy)-9 ...
Distinctive dielectric properties of nematic liquid crystal dimers

Sebastian Ugarteche, Nerea; Robles Hernández, Beatriz; Díez Berart, Sergio; Salud Puig, Josep; Luckhurst, G.R.; Dunmur, D. A.; López Pérez, David Orencio; de la Fuente, Maria del Rosario (2017-01-01)
Article
Open Access
We provide an overview of the effect of the molecular structure on the dielectric properties of dimers exhibiting nematic and twist-bend nematic phases with special focus on how the conformational distribution changes are ...

Miscibility studies of two twist-bend nematic liquid crystal dimers with different average molecular curvatures. A comparison between experimental data and predictions of a Landau mean-field theory for the NTB-N phase transition

López Pérez, David Orencio; Robles Hernández, Beatriz; Salud Puig, Josep; De la Fuente, Maria Rosario; Sebastian, N.; Díez Berart, Sergio; Jaen, X.; Dunmur, D.A.; Luckhurst, G.R. (2016-01-14)
Article
Open Access
We report a calorimetric study of a series of mixtures of two twist-bend liquid crystal dimers, the 1'',7''-bis(4-cyanobiphenyl)-4'-yl heptane (CB7CB) and 1''-(2',4-difluorobiphenyl-4'-yloxy)-9''-(4-cyanobiphenyl-4'-yloxy) ...

Molecular dynamics of a binary mixture of twist-bend nematic liquid crystal dimers studied by dielectric spectroscopy

Robles Hernández, Beatriz; Sebastian Ugarteche, Nerea; Salud Puig, Josep; Díez Berart, Sergio; Dunmur, D.A.; Luckhurst, G.R.; López Pérez, David Orencio; de la Fuente Lavin, Maria Rosario (American Chemical Society (ACS), 2016-06-21)
Article
Open Access
We report a comprehensive dielectric characterization of a liquid crystalline binary mixture composed of the symmetric mesogenic dimer CB7CB and the nonsymmetric mesogenic dimer FFO9OCB. In addition to the high-temperature ...

Twist, tilt, and orientational order at the nematic to twist-bend nematic phase transition of 1 '',9 ''-bis(4-cyanobiphenyl-4 '-yl) nonane: A dielectric, H-2 NMR, and calorimetric study

Robles Hernández, Beatriz; Sebastian Ugarteche, Nerea; Rosario De la Fuente, M.; López Pérez, David Orencio; Díez Berart, Sergio; Salud Puig, Josep; Ros, M. Blanca; Dunmur, D.A.; Luckhurst, G.R.; Timimi, Bakir A. (2015-12-02)
Article
Open Access
The nature of the nematic-nematic phase transition in the liquid crystal dimer 1 '',9 ''-bis(4-cyanobiphenyl-4'-yl) nonane (CB9CB) has been investigated using techniques of calorimetry, dynamic dielectric response measurements, ...