Investigation of Refractive Indices of Free-Standing Films by Ellipsometry

Okumoto, Yoshitaka; Kimura, Masaaki; Ariga, Tadashi; Matsuhashi, Nobuaki; Yoshida, Masafumi; Tadokoro, Toshiyasu

doi:10.1080/15421400490432623

Cited by 4 publications

(2 citation statements)

References 6 publications

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“…Now let us consider the obliquely incident light toward a thin liquid crystal film. 3) As is illustrated in Fig. 1, when a light beam with symmetric incident angles þ and À is incident on the thin film, the amplitude transmissivity of ppolarized light and s-polarized light T þ p ; T þ s and T À p ; T À s are represented by…”

Section: Eliminating the Effect Of Multiple-beam Interference On Tran...mentioning

confidence: 99%

Offset of Multiple-Beam Interference inside Anisotropic Multilayered Structure: Determination of Polar Anchoring Strength at Nematic Liquid Crystal-Wall Interface

Hung

Kimura

Ariga

2005

Jpn. J. Appl. Phys.

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An optical technique for eliminating the inaccuracy in the measurement of retardation caused by multiple-beam interference in anisotropic multilayer-structured thin film is developed by the detailed analysis of obliquely incident transmission ellipsometry. The director distribution of a nematic liquid crystal inside a conventional sandwich-type cell which constitutes glass substrates, alignment films and transparent electrodes can be accurately determined without taking complicated multilayer analysis into account. As a typical application, a novel method of determining of the polar anchoring strength at the nematic liquid crystal-wall interface is proposed. The accurate measurement of the director distortion of a NLC without information on the refractive indices of ITO films, alignment films and glass substrates results in the realization of polar anchoring strength with a high accuracy. This technique can be used to achive a strong polar anchoring reaching the order of 10-3 J/m2.

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Section: Eliminating the Effect Of Multiple-beam Interference On Tran...mentioning

confidence: 99%

Offset of Multiple-Beam Interference inside Anisotropic Multilayered Structure: Determination of Polar Anchoring Strength at Nematic Liquid Crystal-Wall Interface

Hung

Kimura

Ariga

2005

Jpn. J. Appl. Phys.

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“…The incidence plane of the laser beam was the x-z plane (the zaxis along the layer normal, the y-axis along the electric field). 7,8)…”

Section: Principle and Measuring System Of The Experimentsmentioning

confidence: 99%

Optical Properties of 4-Octyl-4'-Cyanobiphenyl Liquid-Crystalline Free-Standing Films

Matsuhashi

Okumoto

Kimura

et al. 2005

Jpn. J. Appl. Phys.

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The short-wavelength effects on the fluctuation-induced diamagnetism (FD) in bulk isotropic three-dimensional (3D) superconductors are taken into account by introducing in the Gaussian-Ginzburg-Landau approach different cut-off conditions. These calculations, which extend to the 3D case our previous results on layered superconductors, are then used to briefly analyse the FD data measured for the low-temperature superconducting alloy Pb-8 at.% In. These analyses confirm the adequacy of a total-energy cut-off for explaining, for low-temperature 3D superconductors also, the thermal fluctuation effects in the high-reduced-temperature region. These results thus provide further support to the recent proposal that, due to the localization energy, the size of the effective fluctuations cannot be appreciably smaller than the superconducting coherence length amplitude extrapolated to T = 0 K.

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Optical Properties of Liquid Crystals

Dunmur

2014

Handbook of Liquid Crystals

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Investigation of Refractive Indices of Free-Standing Films by Ellipsometry

Cited by 4 publications

References 6 publications

Offset of Multiple-Beam Interference inside Anisotropic Multilayered Structure: Determination of Polar Anchoring Strength at Nematic Liquid Crystal-Wall Interface

Offset of Multiple-Beam Interference inside Anisotropic Multilayered Structure: Determination of Polar Anchoring Strength at Nematic Liquid Crystal-Wall Interface

Optical Properties of 4-Octyl-4'-Cyanobiphenyl Liquid-Crystalline Free-Standing Films

Optical Properties of Liquid Crystals

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