D
D. A. Dunmur
Researcher at University of Southampton
Publications - 23
Citations - 1287
D. A. Dunmur is an academic researcher from University of Southampton. The author has contributed to research in topics: Liquid crystal & Dielectric. The author has an hindex of 13, co-authored 23 publications receiving 1140 citations.
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Journal ArticleDOI
Phase behavior and properties of the liquid-crystal dimer 1′′,7′′-bis(4-cyanobiphenyl-4′-yl) heptane: A twist-bend nematic liquid crystal
Mirko Cestari,Mirko Cestari,S. Diez-Berart,D. A. Dunmur,Alberta Ferrarini,M. R. de la Fuente,D. J. B. Jackson,David López,Geoffrey R. Luckhurst,M. A. Perez-Jubindo,Robert M. Richardson,Josep Salud,Bakir A. Timimi,Herbert Zimmermann +13 more
TL;DR: It is concluded that the low-temperature mesophase of CB7CB is a new type of uniaxial nematic phase having a nonuniform director distribution composed of twist-bend deformations, and calculations using an atomistic model and the surface interaction potential with Monte Carlo sampling predict dielectric and elastic properties in the nematics phase.
Reference BookDOI
Crystals that flow: classic papers from the history of liquid crystals
TL;DR: The development of display device technology is described in detail in this paper, where anisotropic, polymeric, and elastomeric liquid crystals are used for display device development.
Journal ArticleDOI
A new twist to molecular chirality: intrinsic chirality indices
TL;DR: In this article, an intrinsic molecular chirality tensor based only on nuclear positions is proposed, which gives rise to two universal Chirality indices, the first giving information about absolute chichality, and the second about the anisotropy chichalality, i.e., the degree of chiral in different spatial directions.
Journal ArticleDOI
Dielectric, calorimetric and mesophase properties of 1′′-(2′,4-difluorobiphenyl-4′-yloxy)-9′′-(4-cyanobiphenyl-4′-yloxy) nonane: an odd liquid crystal dimer with a monotropic mesophase having the characteristics of a twist-bend nematic phase
Nerea Sebastián,David López,Beatriz Robles-Hernández,Beatriz Robles-Hernández,M. R. de la Fuente,Josep Salud,M. A. Perez-Jubindo,D. A. Dunmur,Geoffrey R. Luckhurst,D. J. B. Jackson +9 more
TL;DR: It is concluded that the low temperature mesophase exhibits the characteristics of a twist-bend nematic phase, and the nematic-to-isotropic phase transition has been exhaustively studied from the accurate evolution of the heat capacity and the static dielectric permittivity data.
Journal ArticleDOI
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, 2 H NMR, and calorimetric study
Beatriz Robles-Hernández,Nerea Sebastián,Nerea Sebastián,M. Rosario de la Fuente,David López,S. Diez-Berart,Josep Salud,M. Blanca Ros,D. A. Dunmur,Geoffrey R. Luckhurst,Bakir A. Timimi +10 more
TL;DR: 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, and (2)H NMR spectroscopy.