Results 41 to 50 of about 14,697,656 (278)

Development of a Mercury Bromide Birefringence Measurement System Based on Brewster’s Angle

Sensors, 2023
Mercury bromide (Hg2Br2) has been used to develop acousto-optic tunable filters (AOTFs) because it has several advantages, including a high refractive index, a broad optical bandwidth, and a relatively high figure of merit.
Oh-Tae Kwon, Geonwoo Kim, Hyungjin Bae, Jaeyeol Ryu, Sikwan Woo, Byoung-Kwan Cho   +5 more
doaj   +1 more source

Thermoresponsive Liquid Crystalline Polymer Coatings Programmed by Field‐Induced Topological Defects for Tunable Optical and Topographical Responses

Advanced Functional Materials, EarlyView.
Resonant standing waves generate large‐area lattices of liquid‐crystal topological defects that are permanently encoded into polymer coatings by photopolymerization. The preserved director architecture produces thermally reconfigurable surface topographies while maintaining programmable optical functionality, demonstrating a scalable strategy for ...
Jacques A. Peixoto, Mufeeduzaman Chavilkkadan, Alexander Fusi, Marko Beslać, Dirk J. Broer, Etienne Brasselet, Danqing Liu   +6 more
wiley   +1 more source

Precise detection of tiny birefringence with accuracy reaching 10−11 level

Nature Communications
High-precision birefringence detection is crucial in many fundamental and applied research fields such as chirality detection, optical clocks and quantum information.
Xiliang Zhang, Yanwen Hu, Shiwen Zhou, Zepei Zeng, Guohua Liu, Haolin Lin, Zhen Li, Zhenqiang Chen, Shenhe Fu   +8 more
doaj   +1 more source

Upcycling Keratin‐Based Textile Waste Into High‐Performance Hybrid Fibers Via Tuning the Interfacial Interactions

Advanced Functional Materials, EarlyView.
Keratin recovered from animal‐hair textile waste is fractionated and blended with cellulose to produce continuously spun hybrid fibers. Selecting the high‐molecular‐weight keratin fraction enables 30 wt.% keratin incorporation while maintaining high strength in dry and wet states.
Mian Zhai, Daniel Van Opdenbosch, Inge Schlapp‐Hackl, Teemu Välisalmi, Markus Linder, Michael Hummel, Wenwen Fang   +6 more
wiley   +1 more source

Photoinduced birefringence in azopolymers measured at 1550 nm [PDF]

EPJ Web of Conferences
Azobenzenes are a class of compounds presenting photoisomerization capabilities that allow the writing and erasure of birefringence along a desired direction.
Soares Beatriz, Silva Susana, Ribeiro Paulo, Frazão Orlando   +3 more
doaj   +1 more source

Synergistic Integration of Liquid Crystalline Ordering and Dynamic Networks for Ultrarobust Bismaleimide Vitrimers

Advanced Functional Materials, EarlyView.
A liquid‐crystalline bismaleimide vitrimer integrates local mesogenic organization with exchange‐active ester connectivity, achieving a glass‐transition temperature near 300°C while remaining reprocessable. Stress‐relaxation analysis and temperature‐dependent remolding reveal how segmental mobility, network rearrangement, and structural integrity ...
Woohyeon Kwon, Van‐Kien Hoang, Kyosun Ku, Hyeonuk Yeo   +3 more
wiley   +1 more source

Investigation of highly birefringent and highly nonlinear Hexa Sectored PCF with low confinement loss

Results in Physics, 2018
A novel design of Hexa Sectored Photonic Crystal Fiber (HS-PCF) with high nonlinearity and high birefringence has been revealed in this paper where core is slotted and filled with Gallium Phosphide (GaP). Finite Element Method has been used for numerical
Md Toaha Anas, Sayed Asaduzzaman, Kawsar Ahmed, Touhid Bhuiyan   +3 more
doaj   +1 more source

Highly Birefringent, Low-Loss, and Near-Zero Flat Dispersion ENZ Based THz Photonic Crystal Fibers

IEEE Photonics Journal, 2020
In this paper, we present and compare two experimentally feasible photonic crystal fiber (PCF) designs ($\textit{Type-I}$ and $\textit{Type-II}$) which ensure near-zero flattened dispersion with ultra-high phase and group birefringence at THz frequencies.
Md. Shahjalal Hossain, S. M. Abdur Razzak, Christos Markos, Nguyen Hoang Hai, Md. Selim Habib, Md. Samiul Habib   +5 more
doaj   +1 more source

ACOUSTIC BIREFRINGENCE AT ELECTROMAGNETIC EXCITATION OF SOUND IN IRON BORATE CRYSTALS [PDF]

Радиофизика и электроника, 2016
High temperature antiferromagnets such as iron borate, hematite etc., have high magnetoelastic coupling. As a result, in the conditions of birefringence effect, there is a possibility to control parameters of sound waves by a small external magnetic ...
V. I. Khizhnyi, A. P. Korolyuk, T. M. Khizhnaya   +2 more
doaj   +1 more source

A Polarimetric Fiber Ring Laser Incorporating a Coupled Optoelectronic Oscillator and Its Application to Magnetic Field Sensing

Photonics, 2023
A novel configuration for a polarimetric fiber ring laser incorporating a coupled optoelectronic oscillator (COEO) is proposed and experimentally demonstrated, and its application to magnetic field sensing is studied.
Danqi Feng, Yangxu Tang, Run Lei, Ziqing Feng, Ming Deng   +4 more
doaj   +1 more source