Molecular dynamics of a discotic liquid crystal investigated by a combination of dielectric relaxation and specific heat spectroscopy

Soft Matter ◽  
2012 ◽  
Vol 8 (43) ◽  
pp. 11115 ◽  
Author(s):  
Christina Krause ◽  
Huajie Yin ◽  
Carole Cerclier ◽  
Denis Morineau ◽  
Andreas Wurm ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Liquid Crystal ◽  
Specific Heat ◽  
Dielectric Relaxation ◽  
Discotic Liquid Crystal ◽  
Specific Heat Spectroscopy

Complex molecular dynamics of a symmetric model discotic liquid crystal revealed by broadband dielectric, thermal and neutron spectroscopy

Soft Matter ◽  
2020 ◽  
Vol 16 (8) ◽  
pp. 2005-2016 ◽  
Author(s):  
Arda Yildirim ◽  
Christina Krause ◽  
Reiner Zorn ◽  
Wiebke Lohstroh ◽  
Gerald J. Schneider ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Liquid Crystal ◽  
Molecular Mobility ◽  
Time Range ◽  
Symmetric Model ◽  
Neutron Spectroscopy ◽  
Discotic Liquid Crystal

The molecular mobility of the discotic liquid crystal HAT6 is investigated in a broad time range using different methods.

Origin of glassy dynamics in a liquid crystal studied by broadband dielectric and specific heat spectroscopy

2007 ◽  
Vol 75 (6) ◽  
Author(s):  
A. R. Brás ◽  
M. Dionísio ◽  
H. Huth ◽  
Ch. Schick ◽  
A. Schönhals
Keyword(s):  
Liquid Crystal ◽  
Specific Heat ◽  
Glassy Dynamics ◽  
Specific Heat Spectroscopy

Dielectric Relaxation Studies of Silver Nanoparticles dispersed Liquid Crystal

2015 ◽  
Vol 8 (3) ◽  
pp. 2176-2188 ◽  
Author(s):  
Keisham Nanao Singh
Keyword(s):  
Activation Energy ◽  
Silver Nanoparticles ◽  
Liquid Crystal ◽  
Dielectric Relaxation ◽  
Relaxation Process ◽  
Relaxation Times ◽  
Low Frequency ◽  
Bulk Liquid ◽  
Molecular Rearrangement ◽  
Relaxation Studies

This article reports on the Dielectric Relaxation Studies of two Liquid Crystalline compounds - 7O.4 and 7O.6 - doped with dodecanethiol capped Silver Nanoparticles. The liquid crystal molecules are aligned homeotropically using CTAB. The low frequency relaxation process occurring above 1 MHz is fitted to Cole-Cole formula using the software Dielectric Spectra fit. The effect of the Silver Nanoparticles on the molecular dipole dynamics are discussed in terms of the fitted relaxation times, Cole-Cole distribution parameter and activation energy. The study indicate a local molecular rearrangement of the liquid crystal molecules without affecting the order of the bulk liquid crystal molecules but these local molecules surrounding the Silver Nanoparticles do not contribute to the relaxation process in the studied frequency range. The observed effect on activation energy suggests a change in interaction between the nanoparticles/liquid crystal molecules.

Dielectric Relaxation in Liquid Crystal Phases with Polar Order

2003 ◽  
Vol 297 (1) ◽  
pp. 91-105
Author(s):  
B. Żywucki ◽  
W. Kuczyński ◽  
J. Małecki
Keyword(s):  
Liquid Crystal ◽  
Dielectric Relaxation ◽  
Polar Order ◽  
Crystal Phases ◽  
Liquid Crystal Phases
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