Results 91 to 100 of about 8,745 (262)

Reference-Free Terahertz Time-Domain Spectroscopy for Direct Measurement of Birefringence and Linear Dichroism

open access: yesPhotonics
Terahertz time-domain spectroscopy (THz-TDS) is a widely used technique for characterizing a broad range of materials in the terahertz frequency region. Conventional THz-TDS requires both reference and sample signals to extract optical parameters such as
Maoto Suzuki   +2 more
doaj   +1 more source

Metasurface‐Based Multidimensional Light‐Field Manipulation: From Technologies to Applications

open access: yesAdvanced Science, EarlyView.
Multidimensional metasurfaces enable versatile manipulation of multiple optical degrees of freedom, including phase, amplitude, polarization, wavelength, and orbital angular momentum. This review summarizes their fundamental mechanisms, emerging strategies for multidimensional light‐field control, and key applications in optical computing, imaging ...
Heliang Yin   +6 more
wiley   +1 more source

Temperature-Dependent Polarization Characterization and Birefringence Inversion in Super-Twisted Nematic Liquid Crystals

open access: yesPhotonics
The temperature-dependent polarization performance of super-twisted nematic liquid crystals (STN-LCs) when used as polarizers has garnered considerable scholarly attention.
Houtong Liu   +4 more
doaj   +1 more source

Photo‐Induced Stepwise Liquid Crystal Phase Transition Enabled by Hydrazone Photoswitch

open access: yesAdvanced Science, EarlyView.
A judiciously designed bistable hydrazone photoswitch enables a photo‐induced stepwise “order‐disorder” phase transition in liquid crystals. The linear‐to‐bent isomerization disrupts molecular packing, allowing precise tuning of phase transition temperatures.
Shijie Liu   +11 more
wiley   +1 more source

The measurement of temperature with using of birefringence crystals as detectors [PDF]

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2009
The carried out researches allowed to motivate and put into practice the polarizatoin-optical method of temperature measurement based on the phenomenon of temperature alteration in value of birefringence of the optically anisotropic crystals.
Gaba V. M.
doaj  

Nonmonotonic Enhancement of Electro‐Optic Properties of Wurtzite AlN Thin Films by Sc Doping

open access: yesAdvanced Electronic Materials, EarlyView.
EO coefficient, rc, for Sc‐AlN thin films in comparison with that for Mg ZnO thin films (left). Calculated electric field intensity of the fundamental mode supported by the active area that includes Sc‐AlN (right). ABSTRACT Wurtzite ferroelectrics, such as Sc‐doped AlN, have recently attracted considerable attention for their potential in realizing ...
K. Abe   +11 more
wiley   +1 more source

AI‐Powered Smart Displays and AR Glasses: Perspectives and Challenges

open access: yesAdvanced Intelligent Systems, EarlyView.
This perspective examines how AI is reshaping smart displays and AR glasses. The latest in image‐quality enhancement, sensor‐integrated display optimization, and physiological sensing in display systems, followed by AI‐assisted AR technologies including waveguide optimization, image compensation, foveated rendering, and multimodal sensing, is discussed.
Luke Benoit   +8 more
wiley   +1 more source

Outcomes of Patients With AL Amyloidosis and End‐Stage Renal Disease After Initiation of Therapy

open access: yesAmerican Journal of Hematology, EarlyView.
ABSTRACT In AL amyloidosis, advanced renal disease can impact treatment options and cause significant morbidity. Patients with ESRD requiring dialysis are a group with currently unmet needs. In this collaborative study, we identified 362 patients from three European centers who initiated dialysis during the course of the disease.
Foteini Theodorakakou   +10 more
wiley   +1 more source

The Interplay of Crystal‐Field Transitions and Exchange Spin Dynamics in a Ferrimagnet

open access: yesAdvanced Physics Research, EarlyView.
Temperature‐dependent THz spectroscopy reveals strong hybridization between Yb3+ CEF excitations and Yb–Fe exchange dynamics in Gd3/2Yb1/2BiFe5O12. Near the magnetization compensation temperature, spectral weight is redistributed between the coupled modes, while the Yb–Fe exchange mode exhibits an anomalous redshift upon cooling due to CEF‐mediated ...
Arpita Dutta   +3 more
wiley   +1 more source

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