Results 1 to 10 of about 16,221 (257)
Ferroelectric Nematic Liquid Crystals Showing High Birefringence [PDF]
Advanced ScienceHigh birefringence nematic liquid crystals are particularly demanded for adaptive optics applications in the infrared spectrum because it enable a thinner cell gap for achieving fast response time and improved diffraction efficiency.
Yaohao Song +5 more
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Fluorination Improves the Electro-Optical Properties of Benzoxazole-Terminated Liquid Crystals in High Birefringence Liquid Crystal Mixtures: Experimental and Theoretical Investigations [PDF]
Molecules, 2023 Aromatic heterocyclic liquid crystal (LC) materials have received much attention from LC chemists for their high birefringence and large dielectric anisotropy, yet few have reported their properties in LC mixtures.
Ran Chen +4 more
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High Birefringence Liquid Crystals [PDF]
Crystals, 2013 Liquid crystals, compounds and mixtures with positive dielectric anisotropies are reviewed. The mesogenic properties and physical chemical properties (viscosity, birefringence, refractive indices, dielectric anisotropy and elastic constants) of compounds
Jakub Herman +2 more
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High Birefringence D-Shaped Germanium-Doped Photonic Crystal Fiber Sensor [PDF]
Micromachines, 2022 In this work, a surface plasmon resonance (SPR) sensor based on a D-shaped germanium-doped photonic crystal fiber (PCF) is proposed. The finite element method (FEM) is introduced to analyze the structure parameters, such as germanium-doped concentration,
Qianhe Zhao +5 more
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A high birefringence liquid crystal for lenses with large aperture. [PDF]
Sci Rep, 2022 AbstractThis work presents the application of an experimental nematic liquid crystal (LC) mixture (1929) in a large aperture lens. The LC material is composed of terphenyl and biphenyl derivatives compounds with an isothiocyanate terminal group and fluorinated lateral substituents.
Bennis N +8 more
europepmc +6 more sources
Dynamic Birefringence of High Polymers
Journal of the Society of Materials Science, Japan, 1963 最近, 小野木, KeedyおよびSteinらは高分子フィルムを振動させながら複屈折の変化を測定する新しい技術について報告している。本報も同様な研究技術に関するものであるが, 特に複屈折とひずみあるいは応力との位相角を, -40から200℃の温度範囲, 0.005から20c/sの周波数領域で, より容易に測定できる装置の試作について述べている。この装置はまた, 一定ひずみおよび一定ひずみ速度などの静的条件の下で複屈折, ひずみ, 応力の同時測定を行なう場合にも用いられる。加硫ゴムおよびポリエチレンフィルムについて行なった予備実験の結果, この装置が良好なリサージュ図形を与え, 目的とした位相角の測定に十分役立つこと ...
Ryo YAMADA +2 more
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Frontiers in Physics, 2022 In this paper, a novel refractive index sensor based on photonic crystal fiber and Sagnac ring is studied. The sensor adopts Mach-Zehnder interference principle.
Zhiying Liu, Hao Li, Zhiwen Zhang
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High birefringence single-polarization composite structured anti-resonant fiber
Results in Physics, 2023 We propose a highly birefringent, single-polarization composite structured anti-resonant fiber (CS-ARF). The proposed CS-ARF has an elliptical core, two symmetrically spaced arrays of elliptical air holes, and a six-tube anti-resonant structure.
Xu'an Liu +3 more
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Results in Physics, 2021 A novel hybrid hollow-core polarization-maintaining fiber is proposed by combining the photonic bandgap mechanism and anti-resonant effect. High birefringence can be achieved by introducing a pair of negative curvature anti-resonant layers into the air ...
Yuru Guo +3 more
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Corresponding relationship between characteristic birefringence, strain, and impurities in Zimbabwean mixed-habit diamonds revealed by mapping techniques [PDF]
European Journal of Mineralogy, 2022 Birefringence in diamond is an optical phenomenon related to strain and various defects in crystal lattices. Despite extensive investigations being done to characterize and quantify it, there is still controversy about its origin in diamond lattices ...
C. Sun +5 more
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