Role of the surface anchoring energy on the spontaneous modulated pattern formation of hybrid aligned cholesteric liquid crystals

2017 ◽  
Vol 657 (1) ◽  
pp. 107-115 ◽  
Author(s):  
R. L. Biagio ◽  
R. Teixeira de Souza ◽  
L. R. Evangelista ◽  
R. S. Zola
Keyword(s):  
Liquid Crystals ◽  
Pattern Formation ◽  
Cholesteric Liquid Crystals ◽  
Surface Anchoring ◽  
Anchoring Energy

scholarly journals Surface anchoring energy of cholesteric liquid crystals

2019 ◽  
Vol 47 (4) ◽  
pp. 477-480 ◽  
Author(s):  
Tianyi Guo ◽  
Xiaoyu Zheng ◽  
Peter Palffy-Muhoray
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Surface Anchoring ◽  
Anchoring Energy

Light propagation in cholesteric liquid crystals: the role of chirality

2020 ◽  
Vol 713 (1) ◽  
pp. 65-77
Author(s):  
Tianyi Guo ◽  
Xiaoyu Zheng ◽  
Peter Palffy-Muhoray
Keyword(s):  
Liquid Crystals ◽  
Light Propagation ◽  
Cholesteric Liquid Crystals

UNDULATION PATTERNS IN PATTERN FORMATION OF CHOLESTERIC LIQUID CRYSTALS AS WAVELENGTH-CHANGING INSTABILITIES

2004 ◽  
Vol 413 (1) ◽  
pp. 489-497
Author(s):  
Tae-Young Yoon ◽  
Cherlhyun Jeong ◽  
Sung-Jin Kim ◽  
Chang-Jae Yu ◽  
Sin-Doo Lee
Keyword(s):  
Liquid Crystals ◽  
Pattern Formation ◽  
Cholesteric Liquid Crystals

scholarly journals Comment on the Determination of the Polar Anchoring Energy by Capacitance Measurements in Nematic Liquid Crystals

2021 ◽  
Author(s):  
Patrick Oswald
Keyword(s):  
Liquid Crystals ◽  
Sample Thickness ◽  
Dielectric Constants ◽  
Brilliant Yellow ◽  
Voltage Range ◽  
Capacitance Measurements ◽  
A Cell ◽  
Anchoring Energy

Capacitance measurements have been extensively used to measure the anchoring extrapolation length L at a nematic-substrate interface. These measurements are extremely delicate because the value found for L often critically depends on the sample thickness and the voltage range chosen to perform the measurements. Several reasons have been proposed to explain this observation, such as the presence of inhomogeneities in the director distribution on the bounding plates or the variation with the electric field of the dielectric constants. In this paper I propose a new method to measure Lp that takes into account this second effect. This method is more general than that proposed in Murauski et al. Phys. Rev. E 71, 061707 (2005) because it does not assume that the anchoring angle is small and that the anchoring energy is of the Rapini-Papoular form. This method is applied to a cell of 8CB treated for planar unidirectional anchoring by photoalignment with the azobenzene dye Brilliant Yellow. The role of flexoelectric effects and the shape of the anchoring potential are discussed.

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