Temperature calibration on cooling using liquid crystal phase transitions. G. W. H. Hö,hne J. Schawe and C. Schnick. Thermochimica Acta . 1993Hohne, G. W. H., J. Schawe, et al. (1993). "Temperature Calibratio
liquid crystal phase transitionspolarizing microscopeparamorphotic phase transitionsA temperature scanning attachment for the polarizing microscope is described that offers a simple but powerful technique with which to detect even subtle paramorphotic phase transitions in liquid crystals with high temperature ...
Y.V. Sperkach, V.S. Sperkach, O. Aliokhin, A.L. Strybulevych, M. Masuko, "Temperature dependence of acoustical relaxation times involving the vicinity of N-I phase transition point in 5CB liquid crystal", Mol.Cryst. and Liq.Cryst, 366, 183-202 (2001)....
The structure and physical properties of liquid crystal (LC) mixtures are a function of composition, and small changes can have pronounced effects on observables, such as phase-transition temperatures. Traditionally, LC mixtures have been assumed to be compositionally homogenous. The results of chemica...
Sample 6 in a low temperature near a liquid nitrogen temperature still maintained a BP state; generally, it may have been vitrified to a glass state, in which the structure of the BP was simply frozen. To determine the glass-transition temperature (Tg), the thermograms of Samples 3 and 6...
liquid(normal,isotropicliquid)thereactuallyexistsaseriesoftransitionsas temperatureincreases,givingrisetoseveralnewphases.Thesenewphases havemechanical,optical,andstructuralpropertiesandarereferredtoasliquid- crystallinephases.Materialsisolatedfromthesephasesareliquidcrytals.Aliquid crystalmay,therefore,beasanintermediateph...
5.4.3 Phase change cooling Phase change cooling can be classified as solid liquid phase change and gas liquid phase change. Solid−liquid phase change material (SLPCM) generally uses paraffin as phase change material (PCM). When temperature reaches its phase transition point, paraffin will absorb...
The OH-stretch bands narrow to that seen in the crystal; phonon peaks grow to a size seen in the crystal; and the Raman intensity in the low-frequency region becomes highly anisotropic. This proves that the LC phase is metastable and frustrates crystallisation on lowering the temperature. In...
a liquid crystal can be fastened. Although a liquid crystal composition of a nematic liquid crystal and an inert fluid containing fluorine (CmFnor CmFnO (n and m are natural numbers)) is used, the decrease of voltage holding rate or the change of phase transition temperature is not observed...
Ultraviolet/visible photon transmission measurements were applied to study liquid crystal phase transitions in the binary BOPDOB-BOPOOB mixture. A sequence exhibiting a new reentrant, namely isotropic-nematic-smectic A-C-A as temperature is lowered, is identified. For the smectic A-C transition, ...