nematic liquid-crystal cell
Bifurcation analysis of the twist-Freedericksz transition in a nematic liquid-crystal cell with pre-twist boundary conditions
... to standard TNCs (Twisted Nematic Cells, π 2 radians total twist) in some applications because of their shorter switching time. Our analysis readily guarantees existence and uniqueness of super-twisted solutions ...
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Macroscopic biaxiality and electric field induced rotation of the minor director in the nematic phase of a bent core liquid crystal
... the nematic phase has been investigated for the bent-core liquid- crystal para-heptylbenzoate diester, using polarised IR ...the nematic director are discussed in terms of the self-assembly of ...
7
Squeezing a drop of nematic liquid crystal with strong elasticity effects
... the liquid crystal during the industrial manufacture of liquid crystal devices, in the present work we formulated and analysed a squeeze-film model for the ODF ...a nematic squeeze film ...
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Dielectric Behaviour of Pure and Dye Doped Nematic Liquid Crystal BKS/B07
... the liquid crystal host ...sample cell was connected to Hewlett-Packard Impedance/Gain Phase Analyser (model HP 4194 A) working in the fre- quency range of 1 kHz to ...the cell with sample and ...
9
Characterization of carbon nanotube–thermotropic nematic liquid crystal composites
... The dispersions of octadecylamine functionalized SWNTs from Aldrich in E7 required the shortest ultrasonication time (2-4 hours) to obtain uniformly “dark” suspension which also gave longer (~ 2 weeks) sedimentation ...
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Capacitive Interdigital Sensor with Inhomogeneous Nematic Liquid Crystal Film
... interdigitated cell is called a unit cell which could be defined as the distance between the centerlines of the adjacent fingers belonging to the same ...
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Method for Tuneable Homeotropic Anchoring at Microstructures in Liquid Crystal Devices
... grating. Cell gaps were measured using reflection ...completed cell was filled with the liquid crystal 4-cyano-4Õpentyl biphenyl (5CB), chosen for the wealth of characterisation data available ...
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Correlation method for measuring the largest Lyapunov exponent in optical fields
... A nematic liquid crystal E7 is sandwiched between two glass ...The cell gap is maintained by a 7 µm-thick spacer ...the liquid crystal cell using transparent ITO ...
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Microlenses immersed in nematic liquid crystal with electrically controllable focal length
... the liquid crystal microlens[5]. A cell is constructed using electrodes patterned with holes on both substrates (mutually aligned) and then the fringing fields between the electrodes cause the ...
6
Shear-driven and pressure-driven flow of a nematic liquid crystal in a slowly varying channel
... We find that in the limit of weak flow effects (i.e. small Ericksen number) flow align- ment does not occur and, in such cases, the director orientation is influenced predom- inantly by the boundary conditions. Critical ...
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Dynamics of Discs in a Nematic Liquid Crystal
... per cell, normals of all nodes in this cell are taking part in the calculation of the surface normal at a mesh site belonging to this ...of liquid crystal particles at the mesh sites near the ...
131
Kickback in nematic liquid crystals
... the liquid crystal the alignment with the magnetic field means that this will be an acceptable ...the liquid crystal? No analysis of this question will be considered in this paper, and it ...
12
Alignment of liquid crystal E7 in composite photonic crystals based on single crystal silicon
... The obtained value of S is significantly lower than that normally obtained for nematic LC (S = 0.67) contained between two windows coated with an orienting agent. The orientation of the LC director L can also be ...
8
Tunable All Optical Switch Implemented in a Liquid Crystal Filled Dual-Core Photonic Crystal Fiber
... We have presented the nonlinear switching characteristics of a coupler implemented in a LC-PCF. Our study shows that both the coupling and dispersion properties of PCF can be altered by changing the temperature and ...
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Thermal tuning of a thin-film optical filter based on porous silicon and liquid crystal
... The transmission spectra of the sample after its infiltration with E7 were measured at 27°C and 80°C (see respectively the dots and circles in Fig. 3b). The lower temperature value corresponds to the nematic phase ...
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Enhanced magnetic field induced optical properties of nanostructured magnetic fluids by doping nematic liquid crystals
... The magnetic-field-induced birefringence of the as- prepared ferronematic samples can be measured by the light extinction method, which consists of a sample cell placed between accurately set ‘crossed’ polarizers ...
7
A note on regularity criterion for 3D compressible nematic liquid crystal flows
... Here r is the density, u is the fluid velocity and d represents the macroscopic aver- age of the nematic liquid crystal orientation field, p(r) := ar g is the pressure with posi- tive constants a ...
5
Preparationand Thermodynamic Behaviourof New Nematic Sulphur-Containing Liquid Crystal
... of liquid crystals, further exhibit some regular position with respect to each ...basis, liquid crystals fall into two types: nematic and ...A nematic mesophase possesses only orientational ...
7
Propagating director bend fluctuations in nematic liquid crystals
... time-dependent nematic director n(r, t), and its coupling to the hydrodynamic velocity field v(r, t), may be accessed experimentally at low wavenumber k and frequency ω by dynamic light ...
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Miscibility Study of Nematic Liquid Crystal with Cholesteric Liquid crystal
... the liquid crystal with another liquid ...the liquid crystal molecules which can have a large effect on the electrooptical properties of a liquid ...the liquid ...
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