Phase Diagram and Molecular Ordering of Dimer Liquid Crystals Dissolved in a Simple Nematic Solvent

1994 ◽  
pp. 139-153 ◽  
Author(s):  
Akihiro Abe ◽  
Renato N. Shimizu ◽  
Hidemine Furuya
Keyword(s):  
Phase Diagram ◽  
Liquid Crystals ◽  
Molecular Ordering ◽  
Nematic Solvent

Molecular Ordering in Nematic MBCA and EPAPU

1990 ◽  
Vol 45 (1) ◽  
pp. 29-32
Author(s):  
S. Sreehari Sastry ◽  
V. Venkata Rao ◽  
P. Narayana Murty ◽  
G. Satyanandam ◽  
T. F. Sundar Raj
Keyword(s):  
Phase Transition ◽  
Liquid Crystals ◽  
Order Parameter ◽  
Nematic Phase ◽  
Spin Probe ◽  
Nematic Liquid Crystals ◽  
Experimental Techniques ◽  
First Order ◽  
Molecular Ordering

AbstractBy EPR, two nematic liquid crystals (MBCA and EPAPU) were investigated using a steroidal nitroxide spin probe. In both liquid crystals the isotropic-nematic phase transition is of first order. The observed variation of the order parameter with temperature is compared with predictions from the Maier-Saupe and Humphries-James-Luckhurst models and with results obtained by several other experimental techniques.

scholarly journals Negative viscosity of liquid crystals in the presence of turbulence: Conductivity dependence, phase diagram, and self-oscillation

2020 ◽  
Vol 101 (2) ◽  
Author(s):  
Fumiaki Kobayashi ◽  
Yuji Sasaki ◽  
Shuji Fujii ◽  
Hiroshi Orihara ◽  
Tomoyuki Nagaya
Keyword(s):  
Phase Diagram ◽  
Liquid Crystals ◽  
Negative Viscosity

Influence of fluctuations on the phase diagram of chiral nematic liquid crystals

2000 ◽  
Vol 61 (3) ◽  
pp. 2759-2768 ◽  
Author(s):  
J. Englert ◽  
H. Stark ◽  
L. Longa ◽  
H.-R. Trebin
Keyword(s):  
Phase Diagram ◽  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Chiral Nematic

A phase diagram near the NAC point in liquid crystals

2002 ◽  
Vol 76 (1) ◽  
pp. 59-63
Author(s):  
S. Salihoğlu ◽  
H. Yurtseven ◽  
Y. Enginer
Keyword(s):  
Phase Diagram ◽  
Liquid Crystals

PHASE DIAGRAM OF BINARY MIXTURE TM74A:E48 LIQUID CRYSTALS

2001 ◽  
Vol 366 (1) ◽  
pp. 101-106 ◽  
Author(s):  
Serafin Delica ◽  
Melvin Estonactoc ◽  
Mary Claire Micaller ◽  
Leorina Cada ◽  
Zenaida Domingo
Keyword(s):  
Phase Diagram ◽  
Liquid Crystals ◽  
Binary Mixture

scholarly journals Ein Verfahren zur Untersuchung von Phasenumwandlungen flüssiger Kristalle durch elektrische Leitfähigkeitsmessungen/ Investigation of Phase Transitions in Liquid Crystals by Means of Electrical Conductivity Measurements

1975 ◽  
Vol 30 (12) ◽  
pp. 1640-1647 ◽  
Author(s):  
G. Heppke ◽  
F. Schneider
Keyword(s):  
Phase Diagram ◽  
Electrical Conductivity ◽  
Liquid Crystals ◽  
Conductivity Measurements ◽  
Sample Cell ◽  
Conductivity Method ◽  
Thermal Methods ◽  
Orientation Effects ◽  
Transitions In Liquid Crystals ◽  
Electrical Conductivity Method

Abstract A procedure for determining the transition temperatures of liquid crystals is described which is based on observation of the electrical conductivity as a function of temperature. It is found in particular that plotting the function d lg x/dT against the temperature gives a resolution and a sensitivity comparable to that of thermal methods of analysis (DTA and DSC). Dynamic orientation effects of the liquid crystals in the sample cell which usually lead to an increase in sensitivity are discussed. The phase diagram of the system 4,4ʹ-di-n-pentyloxy-azoxybenzene/4,4ʹ-di-n-heptyloxy-azoxybenzene determined using the electrical conductivity method is presented.

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