Influence of Electric and Magnetic Fields on the Dielectric Constant and Loss of the Liquid Crystal Anisaldazine

1963 ◽  
Vol 38 (7) ◽  
pp. 1536-1540 ◽  
Author(s):  
Edward F. Carr
Keyword(s):  
Dielectric Constant ◽  
Liquid Crystal ◽  
Magnetic Fields ◽  
Dielectric Constant And Loss ◽  
Electric And Magnetic Fields

scholarly journals Electric and Magnetic Field Effects in p-Methoxy Benzylidene p′-n-Butylaniline

1976 ◽  
Vol 31 (3-4) ◽  
pp. 283-287 ◽  
Author(s):  
N. V. S. Rao ◽  
P. R. Kishore ◽  
T. F. S. Raj ◽  
M. N. Avadhanlu ◽  
C. R. K. Murty
Keyword(s):  
Magnetic Field ◽  
Dielectric Constant ◽  
Liquid Crystal ◽  
Magnetic Fields ◽  
Nematic Liquid Crystal ◽  
Nematic Phase ◽  
Relative Effectiveness ◽  
Magnetic Field Effects ◽  
Electric And Magnetic Fields ◽  
Electric And Magnetic Field

Molecular alignment in the nematic phase of p-methoxy benzylidene p′-n-butylaniline (MBBA) in the presence of electric and magnetic fields is investigated. The relative effectiveness of electric and magentic fields on the nematic liquid crystal MBBA is discussed. In the dielectric regime it is found that the threshold fields for chevron formation are considerably different from the threshold fields for inducing changes in the dielectric constant.

scholarly journals Sensitivity of 6CHBT Liquid Crystal Doped with Ferroelectric or Magnetic Particles to Electric and Magnetic Fields

2014 ◽  
Vol 126 (1) ◽  
pp. 260-261 ◽  
Author(s):  
J. Majorošová ◽  
N. Tomašovičová ◽  
M. Timko ◽  
M. Koneracká ◽  
I.P. Studenyak ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Magnetic Fields ◽  
Magnetic Particles ◽  
Electric And Magnetic Fields

Layered anisotropic liquids: deformation of structures in electric and magnetic fields

2017 ◽  
Vol 12 (2) ◽  
pp. 214-218
Author(s):  
N.G. Migranov ◽  
D.V. Kondratyev
Keyword(s):  
Free Energy ◽  
Liquid Crystal ◽  
Magnetic Fields ◽  
Continuum Model ◽  
Polar Angle ◽  
Unit Vector ◽  
Ferroelectric Liquid Crystal ◽  
Anisotropic Layer ◽  
Electric And Magnetic Fields

On the basis of the analysis of the free energy of a viscoelastic anisotropic layer liquid, a chiral ferroelectric liquid crystal C^∗ , located in a thin cell in a ”bookshelf“ geometry the possibility of the smectic layers periodic distortions in the external magnetic H and electric E fields applied perpendicularly and along the plates, respectively, are investigated. The polar angle θ formed by the unit vector n and the normal a to the smectic planes is fixed, and the appearing Helfrich–Yuro distortions u of the smectic layers are assumed to be small in the proposed continuum model of the liquid ferroelectrics.

Phase Transitions in Liquid Crystal Doped with Magnetic Particles of Different Shapes in Combined Electric and Magnetic Fields

2014 ◽  
Vol 35 (11) ◽  
pp. 2044-2053 ◽  
Author(s):  
Natália Tomašovičová ◽  
Milan Timko ◽  
Vlasta Závišová ◽  
Anežka Hashim ◽  
Jan Jadzyn ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Liquid Crystal ◽  
Magnetic Fields ◽  
Magnetic Particles ◽  
Electric And Magnetic Fields ◽  
Different Shapes

scholarly journals Fréederisksz Transitions in 6CB Based Ferronematics—Effect of Magnetic Nanoparticles Size and Concentration

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 3096
Author(s):  
Katarína Zakutanská ◽  
Danil Petrov ◽  
Peter Kopčanský ◽  
Dorota Węgłowska ◽  
Natália Tomašovičová
Keyword(s):  
Magnetic Field ◽  
Liquid Crystal ◽  
Iron Oxide ◽  
Magnetic Nanoparticles ◽  
Magnetic Fields ◽  
Volume Concentration ◽  
Magnetization Vector ◽  
Oxide Nanoparticles ◽  
Capacitance Measurements ◽  
Electric And Magnetic Fields

In this paper, results acquired from capacitance measurements performed on composites based on nematic liquid crystal 4-cyano-40-hexylbiphenyl (6CB) and spherical iron oxide nanoparticles of various sizes are presented. Electric and magnetic Fréedericksz transitions, as well as structural transitions in combined electric and magnetic fields, were investigated. The obtained results showed the lowering of the threshold magnetic field with an increase in the volume concentration of nanoparticles. Estimations based on results obtained from measurements suggest soft anchoring between liquid crystal director and nanoparticles magnetization vector.

scholarly journals Diamagnetic anisotropy and rotational viscosity of 6CHBT nematic liquid crystal

2021 ◽  
Vol 2056 (1) ◽  
pp. 012029
Author(s):  
A D Kurilov ◽  
I S Chekulaev ◽  
S M Shammai Irani ◽  
N S Parashchuk ◽  
V S Bezruchenko ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Magnetic Fields ◽  
Nematic Liquid Crystal ◽  
Diamagnetic Susceptibility ◽  
Physical Models ◽  
Optical Methods ◽  
Diamagnetic Anisotropy ◽  
Electric And Magnetic Fields ◽  
Rotational Viscosity

Abstract Nematic liquid crystal with polar terminal NCS group was studied by using acoustic and electro-optical methods. Experimental results on rotational viscosity have been obtained by two methods. The anisotropy of diamagnetic susceptibility of the studied LC with temperature variation was determined based on the comparison of these methods. The present results may be useful for testing physical models of the orientation dynamics of nematic liquid crystals in alternating electric and magnetic fields.

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