Introduction to Isotropic Phases

Close to the focus, the phase transition between nematic and isotropic phases (Tc = 331Κ for E7) is reached.

(Int J Eng Sci 98:153–182, 2015) for the case of isotropic phases, it was shown that given a new phase volume fraction and depending on average strain, the strain energy of a two-phase linear-elastic composite is minimized by either direct or inclined simple laminates, direct or skew second-rank laminates or third-rank laminates.

Since both activity and temperature affect the stability of the nematic, for active nematics in the stable regime the temperature can be tuned to observe static interfaces, providing an operational definition for the coexistence of active nematic and isotropic phases.

The methodology is illustrated with an example of a two-phase piezoelectric/piezomagnetic laminate formed by transversally isotropic phases.

ABSTRACT The nematic (chromonic N) and isotropic phases formed by aqueous solutions of a perylene dye are investigated by x-ray diffraction and visible light absorption spectroscopy.

We use a hybrid method of lattice Boltzmann and finite differences to simulate flat and curved interfaces between the nematic and isotropic phases of a liquid crystal described by the Landau-de Gennes theory.

We present flexible LC oligomers stabilising optically isotropic phases, i.

This system exhibits hexagonal and isotropic phases on heating.

Binary mixtures reveal a broad miscibility gap that leads to phase separation between two distinct isotropic phases via spinodal decomposition or nucleation and growth.

In many lyotropic liquid crystals, the evolution of macroscopic anisotropic phases is mediated by tactoids, which are discrete ordered microdroplets existing in continuous disordered phases.

Summary Macroscopic manipulation of self-assembly in lyotropic systems, such as chiral nematic liquid crystals formed by cellulose nanocrystals, is kinetically hindered by the similarity between isotropic and anisotropic phases in composition and physical properties.

0 we found that isotropic phases form at all φ, while ellipsoids with a/b = 7.

These include a gapped fractional quantum Hall state in close proximity to compressible and anisotropic phases, providing evidence for a delicate competition of a manifold of correlated states that are present at fractional fillings, and whose nature is yet to be fully understood.

The samples, namely a di-benzyloxy biphenyl derivative labelled 9/2 RS/RS, and a bimesogenic liquid crystal labelled L1, show a direct transition between two isotropic phases followed, at lower temperatures, by the optically isotropic, 3D structured, cubic phase.