Articles with "birefringence" as a keyword



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Vacuum Birefringence at the Gamma Factory

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Published in 2021 at "Annalen der Physik"

DOI: 10.1002/andp.202100137

Abstract: We explore the perspectives of studying vacuum birefringence at the Gamma Factory. To this end, we assess in detail the parameter regime which can be reliably analyzed resorting to the leading contribution to the Heisenberg-Euler… read more here.

Keywords: vacuum birefringence; birefringence gamma; gamma factory; vacuum ... See more keywords
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Mid-infrared dual-cladding photonic crystal fiber with high birefringence and high nonlinearity

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Published in 2020 at "Optical Review"

DOI: 10.1007/s10043-020-00596-7

Abstract: We propose two mid-infrared photonic crystal fibers with an elliptical As 2 S 3 core and a dual-cladding structure with high birefringence and high nonlinearity. The cladding filling material is silica and the core material… read more here.

Keywords: dual cladding; birefringence high; photonic crystal; mid infrared ... See more keywords
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PMMA/TEMPO-oxidized cellulose nanofiber nanocomposite with improved mechanical properties, high transparency and tunable birefringence

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Published in 2018 at "Cellulose"

DOI: 10.1007/s10570-018-1725-3

Abstract: Recently, cellulose nanofibers (CNFs) have been developed as a very popular renewable and biodegradable nanofiller material for polymer nanocomposites. However, achieving good dispersion in a polymer matrix for effective reinforcement is still a challenge because… read more here.

Keywords: high transparency; mechanical properties; birefringence; improved mechanical ... See more keywords
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Role of structural anisotropy in geometric birefringence of high-birefringence index-guiding PCFs: analysis by moment of inertia

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Published in 2018 at "Optical and Quantum Electronics"

DOI: 10.1007/s11082-018-1725-4

Abstract: We have studied the role of structural anisotropy on the geometric birefringence of four typical high-birefringence (HB) index-guiding photonic crystal fibers (PCFs) with the same air-silica structure and circular, ellipse, and rectangle air holes, respectively.… read more here.

Keywords: role structural; high birefringence; birefringence; structural anisotropy ... See more keywords
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A novel high birefringence equal diameter circular-hole photonic crystal fiber

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Published in 2017 at "Optoelectronics Letters"

DOI: 10.1007/s11801-017-7118-2

Abstract: A novel equal diameter circular-hole photonic crystal fiber (PCF) with high birefringence is proposed and numerically analyzed by employing the finite-element method. The proposed PCF’s birefringence is 10-3, which can reach 2 orders higher than… read more here.

Keywords: diameter circular; equal diameter; circular hole; high birefringence ... See more keywords
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Birefringence dispersion of 6CHBT liquid crystal determined in VIS-NIR spectral range

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Published in 2021 at "Applied Surface Science"

DOI: 10.1016/j.apsusc.2020.148525

Abstract: Abstract The dispersion dependence of the birefringence of optical materials is important for many practical applications. However, it seems that such measurements are rare for some kinds of liquid crystals. The paper aims to partially… read more here.

Keywords: range; liquid crystal; dispersion; birefringence ... See more keywords
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DFT study of the influence of acetyl groups of cellulose acetate on its intrinsic birefringence and wavelength dependence.

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Published in 2019 at "Carbohydrate polymers"

DOI: 10.1016/j.carbpol.2018.11.074

Abstract: The effect of the acetyl groups of cellulose acetate (CA) on its intrinsic birefringence and its wavelength dependence was investigated using density functional theory (DFT). Seven types of CA repeating-unit models that differ in their… read more here.

Keywords: birefringence; intrinsic birefringence; wavelength dependence; birefringence wavelength ... See more keywords
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Dissolution of waxy maize pyrodextrin granules in mixtures of glycerol and water, separating loss of crystallinity from loss of birefringence.

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Published in 2022 at "Carbohydrate polymers"

DOI: 10.1016/j.carbpol.2021.119062

Abstract: Pyrodextrins were prepared by heating waxy maize starch for 4 h at pH 3 & 150 °C, pH 3 & 170 °C, and pH 2 & 150 °C. Those pyrodextrins were soluble in water at 25 °C, but insoluble in glycerol. The objectives… read more here.

Keywords: waxy maize; glycerol water; crystallinity; loss ... See more keywords
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Silicon nano crystal filled ellipse core based quasi photonic crystal fiber with birefringence and very high nonlinearity

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Published in 2018 at "Chinese Journal of Physics"

DOI: 10.1016/j.cjph.2018.09.030

Abstract: Abstract In this paper, we have proposed a new type of quasi photonic crystal fiber (PCF) with a silicon nano crystal core. This structure can be used to sense aqueous analysis over a wavelength range… read more here.

Keywords: quasi photonic; silicon nano; nano crystal; birefringence ... See more keywords
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Local damage evaluation of a laminate composite plate using ultrasonic birefringence of shear wave

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Published in 2018 at "Composites Part B: Engineering"

DOI: 10.1016/j.compositesb.2018.01.006

Abstract: Abstract This paper presents an ultrasonic non-destructive testing method to locally characterize composite material damage through the analysis of the anisotropy behavior variation induced by damage. The approach is based on shear wave contact measurements… read more here.

Keywords: evaluation laminate; shear wave; local damage; damage ... See more keywords
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Enhancement of relative sensitivity of photonic crystal fiber with high birefringence and low confinement loss

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Published in 2017 at "Optik"

DOI: 10.1016/j.ijleo.2016.11.203

Abstract: Abstract In this article, we demonstrate a unique hexagonal lattice structure of Photonic Crystal Fiber for liquid sensing applications. Relative sensitivity, confinement loss and birefringence of the structure have been investigated theoretically. The numerical inquiry… read more here.

Keywords: sensitivity; birefringence; photonic crystal; confinement loss ... See more keywords