Surfactant driven surface anchoring transitions in liquid crystal thin films

Soft Matter ◽  
2010 ◽  
Vol 6 (21) ◽  
pp. 5482 ◽  
Author(s):  
Mark J. Uline ◽  
Shihong Meng ◽  
Igal Szleifer
Keyword(s):  
Thin Films ◽  
Liquid Crystal ◽  
Surface Anchoring ◽  
Anchoring Transitions

Application of Thin Films of Conjugated Polymers in Novel LED's and Liquid Crystal 'Light Valves'

1997 ◽  
Author(s):  
A. G. MacDiarmid ◽  
H. L. Wang ◽  
F. Huang ◽  
J. K. Avlyanov ◽  
P. C. Wang
Keyword(s):  
Thin Films ◽  
Liquid Crystal ◽  
Conjugated Polymers

Temperature influence on homogeneous instabilities in stationary shear flow of nematic liquid crystal with weak surface anchoring

2010 ◽  
Vol 7 ◽  
pp. 191-201
Author(s):  
I.Sh. Nasibullayev ◽  
O.V. Urina
Keyword(s):  
Liquid Crystal ◽  
Shear Flow ◽  
Nematic Liquid Crystal ◽  
Effect Of Temperature ◽  
External Fields ◽  
Temperature Influence ◽  
Surface Anchoring ◽  
Weak Surface ◽  
Surface Coupling

Plane stationary shear flow of the nematic liquid crystal with weak surface anchoring is investigated. The effect of temperature, external fields, and the nature of the surface coupling on the formation of orientation instabilities is investigated.

Temperature influence on orientation dynamics of oscillatory Poiseuille flow of nematic liquid crystal

2010 ◽  
Vol 7 ◽  
pp. 172-181
Author(s):  
I.Sh. Nasibullayev ◽  
U.R. Kamaletdinova
Keyword(s):  
Liquid Crystal ◽  
Nematic Liquid Crystal ◽  
Poiseuille Flow ◽  
External Influence ◽  
Temperature Influence ◽  
Surface Anchoring ◽  
Orientation Behaviour ◽  
Orientation Change ◽  
Low Amplitude ◽  
Flow Plane

In this work is studying temperature influence and surface anchoring in orientation behaviour of oscillatory Poiseuille flow of nematic liquid crystal (NLC) in the plane cell. Without external influence molecules lays along flow plane. Molecules orientation change and caused by this back-flow is studied by low-amplitude decomposition.

Heat Resistance of Ga-Doped ZnO Thin Films for Application as Transparent Electrodes in Liquid Crystal Displays

2010 ◽  
Vol 157 (2) ◽  
pp. J13 ◽  
Author(s):  
Naoki Yamamoto ◽  
Hisao Makino ◽  
Takahiro Yamada ◽  
Yoshinori Hirashima ◽  
Hiroaki Iwaoka ◽  
...  
Keyword(s):  
Thin Films ◽  
Liquid Crystal ◽  
Heat Resistance ◽  
Liquid Crystal Displays ◽  
Zno Thin Films ◽  
Transparent Electrodes ◽  
Doped Zno

scholarly journals Azimuthal Anchoring Strength in Photopatterned Alignment of a Nematic

Crystals ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 675
Author(s):  
H. Nilanthi Padmini ◽  
Mojtaba Rajabi ◽  
Sergij V. Shiyanovskii ◽  
Oleg D. Lavrentovich
Keyword(s):  
Liquid Crystal ◽  
Point Defects ◽  
Elastic Energy ◽  
Separation Distance ◽  
Thin Layers ◽  
Uv Exposure ◽  
Surface Anchoring ◽  
Anchoring Strength ◽  
Spatially Varying

Spatially-varying director fields have become an important part of research and development in liquid crystals. Characterization of the anchoring strength associated with a spatially-varying director is difficult, since the methods developed for a uniform alignment are seldom applicable. Here we characterize the strength of azimuthal surface anchoring produced by the photoalignment technique based on plasmonic metamsaks. The measurements used photopatterned arrays of topological point defects of strength +1 and −1 in thin layers of a nematic liquid crystal. The integer-strength defects split into pairs of half-integer defects with lower elastic energy. The separation distance between the split pair is limited by the azimuthal surface anchoring, which allows one to determine the strength of the latter. The strength of the azimuthal anchoring is proportional to the UV exposure time during the photoalignment of the azobenzene layer.

scholarly journals Anchoring Energy for Nematic Liquid Crystals an Analysis of the Proposed Forms

1984 ◽  
Vol 39 (11) ◽  
pp. 1066-1076 ◽  
Author(s):  
G. Barbero ◽  
N. V. Madhusudana ◽  
G. Durand
Keyword(s):  
Liquid Crystal ◽  
Infinite Series ◽  
Tilt Angle ◽  
Legendre Polynomials ◽  
Fourier Expansion ◽  
Easy Axis ◽  
Practical Interest ◽  
Surface Anchoring ◽  
Functional Forms ◽  
Anchoring Energy

We analyze the proposed functional forms describing the surface anchoring energy of MBBA nematic liquid crystal. Measurements of the surface torque versus tilt angle suggest that the simple cosinus-square form is not adequate for MBBA. The generalized form in an infinite series in cosinus-square is not useful since the set of functions is not orthogonal. Analyses using the orthogonal Legendre polynomials and Fourier expansion are given. Finally we analyse the data in terms of small tilt angles compared to the easy axis, and very far from it, which are the two limits of practical interest.

Advances in model-independent restoration of the liquid crystal surface anchoring potential

2020 ◽  
Vol 713 (1) ◽  
pp. 1-14
Author(s):  
V. A. Belyakov ◽  
D. V. Shmeliova ◽  
S. V. Semenov ◽  
S. S. Kharlamov
Keyword(s):  
Liquid Crystal ◽  
Crystal Surface ◽  
Surface Anchoring ◽  
Model Independent
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