Results 261 to 270 of about 230,654 (298)

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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Pressure Induced Twist Grain Boundary Phase

Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 1995
Abstract We report high pressure studies on a binary system of 4-(2′-methyl butyl)phenyl 4′-n-octyl biphenyl-4-carboxylate (CE8 from BDH) and 4-n- dodecyloxy biphenyl-4′-(2′-methyl butyl)benzoate (C12).
S. Krishna Prasad, Geetha G. Nair, S. Chandrasekhar, J. W. Goodby   +3 more
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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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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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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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Twist Grain Boundary Phases in Binary Mixtures

Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, 1995
Abstract Two twist grain boundary phases (TGB-A and TGB-C*) have been observed in binary mixtures exhibiting a NAC multicritical point. The observed TGB phases are of very high thermal stability - for some concentrations the temperature range of their existence was as large as 40 K. Optical properties and textures has been investigated.
W. Kuczynski, H. Stegemeyer
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Twisted bilayer graphene’s gallery of phases

Physics Today
The simultaneous occurrence of exotic phases, and the ability to easily tune them, has positioned magic-angle twisted bilayer graphene as one of the richest materials platforms in condensed-matter physics.
B. Andrei Bernevig, Dmitri K. Efetov
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Twist Grain Boundary (TGB) Phases

2007
Chirality in self-organizing media can yield a variety of novel mesophases with unique properties and structures. At high levels of chirality, however, non-linear effects come into play. The effects of chirality in self-assembled structures can compete successfully with those of conventional self-assembling properties to yield frustrated structures ...
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Optical Twisted Phase Strips

ACS Photonics, 2023
Jinzhan Zhong, Chenhao Wan, Qiwen Zhan
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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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