Results 11 to 20 of about 15,514,848 (243)

Fluorination Improves the Electro-Optical Properties of Benzoxazole-Terminated Liquid Crystals in High Birefringence Liquid Crystal Mixtures: Experimental and Theoretical Investigations [PDF]

open access: yesMolecules, 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
doaj   +2 more sources

High Birefringence D-Shaped Germanium-Doped Photonic Crystal Fiber Sensor [PDF]

open access: yesMicromachines, 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
doaj   +2 more sources

Ferroelectric Nematic Liquid Crystals Showing High Birefringence [PDF]

open access: yesAdvanced Science
High 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
doaj   +2 more sources

PCF Based Sensor with High Sensitivity, High Birefringence and Low Confinement Losses for Liquid Analyte Sensing Applications [PDF]

open access: yesSensors, 2015
In this paper, we report a design of high sensitivity Photonic Crystal Fiber (PCF) sensor with high birefringence and low confinement losses for liquid analyte sensing applications.
Huseyin Ademgil, Shyqyri Haxha
doaj   +2 more sources

High Frequency Modulation Method for Measuring of Birefringence

open access: yesEPJ Web of Conferences, 2013
A method of optical birefringence measurement is presented. It uses an el ectro-optic modulator for the high frequency modulation of polarization of the laser beam. The developed optical apparatus exhibits high sensitivity.
Šulc M., Kunc Š.
doaj   +2 more sources

Electric birefringence studies of biopolymer systems [PDF]

open access: yes, 1977
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.Important and novel electric birefringence measurements of immediate significance in the biomedical field are reported on a family of materials which form ...
Isles, Martin
core   +7 more sources

Sagnac ring and photonic crystal fiber structure refractive index sensor with high birefringence and low temperature sensitivity

open access: yesFrontiers 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
doaj   +1 more source

High birefringence single-polarization composite structured anti-resonant fiber

open access: yesResults 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
doaj   +1 more source

Corresponding relationship between characteristic birefringence, strain, and impurities in Zimbabwean mixed-habit diamonds revealed by mapping techniques [PDF]

open access: yesEuropean 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
doaj   +1 more source

Locally pressed fibre Bragg grating pressure sensor [PDF]

open access: yes, 2006
A spectral-hole created by locally pressing a fibre Bragg grating exhibited a wavelength-shift within the FBG bandwidth. A sensitivity of 74.3pm/(N/mm) was obtained for pressure applied along the slow axis of a high birefringence ...
Tatam, Ralph P.   +3 more
core   +4 more sources

Home - About - Disclaimer - Privacy