Experimental confirmation of the Osipov-Terentjev theory on the viscosity of nematic liquid crystals

Wu, Shin‐Tson; Wu, Chiung‐Sheng

doi:10.1103/physreva.42.2219

Cited by 202 publications

(103 citation statements)

References 34 publications

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“…The optical response time t op of this cell from V i ¼ 14.8 V rms at the last cycle (from t ¼ 0 to first maximum) is $2.6 ms. This result agrees well with the published value [19]. Figure 6 compares the results of the optical response time in the last cycle, where the red squares show the experimental optical decay times of these three cells released from V i ¼ 14.8 V rms , while the black diamonds give the simulation data.…”

Section: Large Signal Regionsupporting

confidence: 80%

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Cell Gap Effect on the Dynamics of Liquid Crystal Phase Modulators

Wang

Nie

Tie-jun

et al. 2006

Molecular Crystals and Liquid Crystals

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This paper provides a complete physical picture of optical response time as a function of cell gap (d) in a wide voltage regime. Normally both rise and decay times are known to be proportional to d 2 in the small angle approximation (V th < V < ffiffiffi 2 p V th ), and in the high voltage regime where V p < V < V i the optical decay time is independent of d. In this paper, we found that between these two extremes there is a region where the response time is linearly proportional to d. Our analytical derivation is confirmed by experimental results.

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Section: Large Signal Regionsupporting

confidence: 80%

“…IV. If the voltage is removed instantaneously from point A at t ¼ 0, the transient phase change can be approximated as [19]:…”

Section: =[690]mentioning

confidence: 99%

Cell Gap Effect on the Dynamics of Liquid Crystal Phase Modulators

Wang

Nie

Tie-jun

et al. 2006

Molecular Crystals and Liquid Crystals

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“…S. T. Wu and C. S. Wu [18] explain this fact by supposing that two MBBA molecules form a rotating cluster or dimer, however there is no experimental evidence about it. In our consideration it equals 4 and is independent of temperature.…”

Section: Resultsmentioning

confidence: 99%

“…Moreover we can predict all static properties for it as was summarized above. The ratio p = length/width, which is obtained ; solid line from our theory; dashed line from OT theory (see [18]); dots are taken from [17]; triangles are from [19].…”

Section: Rotational Viscosity For Mbbamentioning

confidence: 99%

Static and Hydrodynamic Properties of Nematic Liquid Crystals

Chrzanowska

Sokalski

1992

Zeitschrift Für Naturforschung A

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The static properties of nematic liquid crystals are summarized. The mean field potential emerging from the static distribution function has been used to the hydrodynamic theory. Rotational viscosity coefficients have been investigated. The Parodi relation has been shown to be completely satisfied. Static and hydrodynamic properties have been predicted on the basis of one intermolecular potential.

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“…The transient phase d(t) and phase change Dd can be correlated to the LC director response time s 0 by the following equations [22]:…”

Section: Theorymentioning

confidence: 99%

Second and Fourth Harmonic Frequencies in Electric Field-Induced Liquid Crystal Reorientations

Nie

Xianyu

Tie-jun

et al. 2008

Molecular Crystals and Liquid Crystals

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The second and fourth harmonics of low frequency electric field-induced liquid crystal reorientations are analyzed theoretically and confirming results observed experimentally. These transient dynamic optical responses manifest when the phase of a homogeneous cell is nearby Np or ðN À 1 2 Þp, where N is an integer. These ripples would influence the grayscales of liquid crystal devices if the driving electric field frequency is comparable to the liquid crystal response rate.

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Experimental confirmation of the Osipov-Terentjev theory on the viscosity of nematic liquid crystals

Cited by 202 publications

References 34 publications

Cell Gap Effect on the Dynamics of Liquid Crystal Phase Modulators

Cell Gap Effect on the Dynamics of Liquid Crystal Phase Modulators

Static and Hydrodynamic Properties of Nematic Liquid Crystals

Second and Fourth Harmonic Frequencies in Electric Field-Induced Liquid Crystal Reorientations

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