Mechanism and thermodynamics of multilevel structural transitions in liquid crystals under external actions

2009 ◽  
Vol 12 (1-2) ◽  
pp. 78-84
Author(s):  
L.E. Panin ◽  
V.G. Kunitsyn
Keyword(s):  
Liquid Crystals ◽  
Structural Transitions ◽  
Transitions In Liquid Crystals

Phase contrast imaging using photothermally induced phase transitions in liquid crystals

2006 ◽  
Vol 89 (21) ◽  
pp. 211116 ◽  
Author(s):  
Chandra S. Yelleswarapu ◽  
Sri-Rajasekhar Kothapalli ◽  
Francisco J. Aranda ◽  
D. V. G. L. N. Rao ◽  
Yvonne R. Vaillancourt ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Liquid Crystals ◽  
Phase Contrast ◽  
Phase Contrast Imaging ◽  
Contrast Imaging ◽  
Transitions In Liquid Crystals

scholarly journals Structural transitions in nematic liquid crystals doped with magnetite functionalized single walled carbon nanotubes

2010 ◽  
Vol 9 ◽  
pp. 41-44 ◽  
Author(s):  
Zuzana Mitróová ◽  
Martina Koneracká ◽  
Natália Tomašovičová ◽  
Milan Timko ◽  
Jan Jadzyn ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Liquid Crystals ◽  
Nematic Liquid Crystals ◽  
Single Walled Carbon Nanotubes ◽  
Structural Transitions ◽  
Single Walled Carbon ◽  
Walled Carbon Nanotubes

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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