Results 51 to 60 of about 230,654 (298)
, 2014 In liquid crystals, if flexoelectric couplings between polar order and director gradients are strong enough, the uniform nematic phase can become unstable to formation of a modulated polar phase.
Allender, David W. +2 more
core +1 more source
Crystals, 2021 The twist-bend nematic phase (NTB) exhibits a complicated hierarchy of structures responsible for several intriguing properties presented here. These are: the observation of a fast electrooptic response, the exhibition of a large electroclinic effect ...
Vitaly P. Panov +3 more
doaj +1 more source
K-Poincare-Hopf algebra and Hopf algebroid structure of phase space from twist
, 2013 We unify k-Poincare algebra and k-Minkowski spacetime by embeding them into quantum phase space. The quantum phase space has Hopf algebroid structure to which we apply the twist in order to get k- deformed Hopf algebroid structure and k-deformed phase ...
Juric, Tajron +2 more
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Structure of nanoscale-pitch helical phases: blue phase and twist-bend nematic phase resolved by resonant soft X-ray scattering [PDF]
, 2017 Periodic structures of phases with orientational order of molecules, but homogenous electron density distribution: a short pitch cholesteric, blue phase and twist-bend nematic phase, were probed by a resonant soft x-ray scattering (RSoXS) at the carbon K-
Gorecka, Ewa +5 more
core +4 more sources
Twist-Bend Nematogenic Supramolecular Dimers and Trimers Formed by Hydrogen Bonding
Crystals, 2020 A selection of novel non-symmetric supramolecular liquid crystal dimers and trimers formed by hydrogen-bonding have been prepared and their phase behaviour characterised by polarised optical microscopy, X-ray diffraction and temperature-dependent Fourier-
Rebecca Walker +5 more
doaj +1 more source
Quantum interference tuning of spin-orbit coupling in twisted van der Waals trilayers
Physical Review Research, 2022 We show that in van der Waals stacks of twisted hexagonal layers the proximity induced Rashba spin-orbit coupling can be affected by quantum interference.
Csaba G. Péterfalvi +4 more
doaj +1 more source
Elastic continuum theory: Fully understanding of the twist-bend nematic phases
, 2015 The twist-bend nematic phase, $N_{\rm TB}$, may be viewed as a heliconical molecular arrangement in which the director $\bf n$ precesses uniformly about an extra director field, $\bf t$.
Barbero, Giovanni +4 more
core +1 more source
Chiral Lyotropic Liquid Crystals: TGB Phases and Helicoidal Structures [PDF]
, 1996 The molecules in lyotropic membranes are typically aligned with the surface normal. When these molecules are chiral, there is a tendency for the molecular direction to twist.
Kamien, Randall D., Lubensky, T. C.
core +5 more sources
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Kink oscillations in magnetic tubes with twisted annulus [PDF]
, 2008 Aims.We study kink waves in a magnetic flux tube modelled as a straight core surrounded by a magnetically twisted annulus, both embedded in a straight ambient external field, and derive the dispersion relation for this configuration.
Carter, B., Erdelyi, R.
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