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How Do Intermolecular Interactions Evolve at the Nematic to Twist–Bent Phase Transition? [PDF]

International Journal of Molecular Sciences, 2022
Katarzyna Merkel, Barbara Loska, Yuki Arakawa   +2 more
exaly   +2 more sources

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Twist as a Probe for Phase Structure

Physica Scripta, 1981
Summary: We advocate the use of twist as an efficient tool, in computer simulated lattice gauge theories, for quick scan of phase diagrams and for determining phase structure. Physically, a twist is an excitation induced by a specific dislocation (`twisted boundary condition') in the system.
Groeneveld, J., Jurkiewicz, J., Korthals-Altes, C. P.   +2 more
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Quasicrystallinity in twist-grain-boundary phases

Physical Review Letters, 1991
We present a simplified polymer model for twist-grain-boundary phases in liquid crystals. The thermodynamic phases or this model are characterized by an angle 2πα. There are incommensurate phases with a an irrational number and commensurate phases with α=P/Q, with P and Q relatively prime integers. The latter have quasicrystalline symmetry for Q=5 or Q>
, Lubensky, , Tokihiro, , Renn
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Geometric phases in twisted strips

Physics Letters A, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Satija, Indubala I., Balakrishnan, Radha
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Helical Twisting Power of Induced Twisted Smectic C* Phases

Berichte der Bunsengesellschaft für physikalische Chemie, 1987
AbstractThe helically structured cholesteric and smectic C* phases have been induced by chiral guest molecules in liquid crystalline host systems exhibiting nematic as well as Scphases. The helical twisting power δ has been measured for those systems: i) In all cases values of δchol> δc*were obtained; ii) in the induced Sc* but not in the ...
H. Stegemeyer, H.‐J. Kersting, W. Kuczynski   +2 more
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Observation of a Reentrant Twist Grain Boundary Phase

Physical Review Letters, 2001
Physical Review ...
D S, Shankar Rao, S, Krishna Prasad, V N, Raja, C V, Yelamaggad, S, Anitha Nagamani   +4 more
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Investigation of a Twisted Phase between the Cholesteric and the Smectic A Phase

Crystal Research and Technology, 1996
AbstractIn a ternary mixture of two liquid crystals and a non‐mesomorphic chiral dopant an intermediate state with an unusual texture was found between the cholesteric and the SA phase which could be identified as a separate twisted mesophase. The reflection wavelength of this mesophase does not change with temperature whereas the transmission of ...
A. Chanishvili, G. Chilaya, G. Petriashvili, M. Neundorf, G. Pelzl   +4 more
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A Twist‐Bend Nematic Phase Driven by Hydrogen Bonding

Angewandte Chemie International Edition, 2014
AbstractThe liquid crystalline phase behavior of 4‐[6‐(4′‐cyanobiphenyl‐4‐yl)hexyloxy]benzoic acid (CB6OBA) and 4‐[5‐(4′‐cyanobiphenyl‐4‐yloxy)pentyloxy]benzoic acid (CBO5OBA) is described. Both acids show an enantiotropic nematic phase attributed to the formation of supramolecular complexes by hydrogen bonding between the benzoic acid units.
Jansze, S.M., Martínez-Felipe, A., Storey, J.M.D., Marcelis, A.T.M., Imrie, C.T.   +4 more
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The five-phase twisted-ring counter circuit

10th IEEE International Conference on Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003, 2004
The behavior of the Five-Phase Twisted-Ring Counter (5P-TRC) circuit is analyzed. The circuit produces five individual phased clock signals that exercise a phase difference equal to the half period of the clock. A tree-like structure is built by applying the phased outputs of the circuit to the clock inputs of five replicas of the circuit in order to ...
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Twist phase in Gaussian-beam optics

Journal of the Optical Society of America A, 1998
The recently discovered twist phase is studied in the context of the full ten-parameter family of partially coherent general anisotropic Gaussian Schell-model beams. It is shown that the nonnegativity requirement on the cross-spectral density of the beam demands that the strength of the twist phase be bounded from above by the inverse of the transverse
Simon, R, Mukunda, N
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