Results 21 to 30 of about 13,797 (255)

Rigorous coupled-wave analysis of liquid crystal polarization gratings

Optics Express, 2020
Several types of liquid crystal polarization gratings (LCPGs) can be achieved depending on their molecular configurations and diffraction properties. We perform detailed numerical studies of these LCPGs based on the rigorous coupled-wave analysis (RCWA) approach.
Jianghao Xiong, Shin-Tson Wu
openaire   +2 more sources

Global rigorous coupled wave analysis for design of multilayer metasurface absorbers

Optics Express, 2023
In this work, a novel Global NV-ETM RCWA method is proposed to accelerate the optimization of the periodic stepped radar absorbing structure. This method is based on the rigorous coupled-wave analysis (RCWA) utilizing the normal vector field (NV) and enhanced transmittance matrix (ETM) approach.
Lin Wang, Debao Fang, Haibo Jin, Jingbo Li   +3 more
openaire   +2 more sources

Measurement of refractive indices of tunicates’ tunics: light reflection of the transparent integuments in an ascidian Rhopalaea sp. and a salp Thetys vagina

Zoological Letters, 2017
Background Tunic is a cellulosic, integumentary matrix found in tunicates (Subphylum Tunicata or Urochordata). The tunics of some ascidian species and pelagic tunicates, such as salps, are nearly transparent, which is useful in predator avoidance ...
Hiroshi Kakiuchida, Daisuke Sakai, Jun Nishikawa, Euichi Hirose   +3 more
doaj   +1 more source

Effective spectral optical functions of lamellar nanogratings [PDF]

Journal of the European Optical Society-Rapid Publications, 2006
Spectral properties of lamellar sub-wavelength gratings (nanogratings) are described by effective medium approximation (EMA). Analytical spectral formulae for ordinary and extraordinary effective optical functions are derived for nanogratings consisting ...
Foldyna Martin, Postava Kamil, Ossikovski Razvigor, De Martino Antonello, Garcia-Caurel Enric   +4 more
doaj   +1 more source

Three-Method Hybrid Numerical Simulation for Surface-Plasmon-Enhanced GaInN-Based Light-Emitting Diodes with Metal-Embedded Nanostructures

Frontiers in Physics, 2021
In this paper, a hybrid numerical simulation tool is introduced and performed for GaInN-based light-emitting diodes (LEDs) with metal-embedded nanostructure to theoretically predict external quantum efficiency (EQE), which composed of finite-difference ...
Ryoya Hiramatsu, Ryo Takahashi, Ryoto Fujiki, Keisuke Hozo, Kanato Sawai, Dong-Pyo Han, Motoaki Iwaya, Tetsuya Takeuchi, Satoshi Kamiyama, Isamu Akasaki, Isamu Akasaki   +10 more
doaj   +1 more source

Symmetry Breaking as a Basis for Characterization of Dielectric Materials

Sensors
This paper introduces a novel method for measuring the dielectric permittivity of materials within the microwave and millimeter wave frequency ranges. The proposed approach, classified as a guided wave transmission system, employs a periodic transmission
Dubravko Tomić, Zvonimir Šipuš
doaj   +1 more source

Fabrication of perfect plasmonic absorbers for blue and near-ultraviolet lights using double-layer wire-grid structures

Journal of the European Optical Society-Rapid Publications, 2021
This study proposes using double-layer wire-grid structures to create narrow-band, perfect plasmonic absorbers, which depend on polarization, for the short-wavelength visible and near-ultraviolet regions of the electromagnetic spectrum.
Atsushi Motogaito, Ryoga Tanaka, Kazumasa Hiramatsu   +2 more
doaj   +1 more source

Glide-Shifted Dielectric Gratings for Independent Leakage and Phase Tuning in Leaky-Wave Antennas

IEEE Open Journal of Antennas and Propagation
This paper presents a comprehensive analysis of grounded glide-shifted dielectric periodic structures and their application to the design of leaky-wave antennas (LWAs).
Dubravko Tomic, Francisco Mesa, Zvonimir Sipus   +2 more
doaj   +1 more source

Importin 7 mediates the nuclear import of HIV‐1 integrase via a specific interacting interface

FEBS Open Bio, EarlyView.
HIV‐1 integrase enables viral DNA integration into the host genome. By binding to the core domain of the host protein Importin 7 via its C‐terminal domain, the integrase is transported across the nuclear membrane into the nucleus, where integration of the viral genome into host DNA takes place. This translocation is a critical step for subsequent viral
Juana Bana, Avigail Yariv, Tal Oppenheim, Hadar Amartely, Dana Reichmann, Oded Livnah   +5 more
wiley   +1 more source

Complementing Engel Classification: Postoperative Scalp EEG as an Objective Indicator in SEEG‐Guided Radiofrequency Thermocoagulation—A Seizure‐Onset Pattern‐Based Stratified Analysis—

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Stereoelectroencephalography‐guided radiofrequency thermocoagulation (SEEG‐RFTC) is a minimally invasive therapy for drug‐resistant focal epilepsy. However, the relationship between specific seizure‐onset patterns (SOPs), particularly low‐voltage fast activity (LVFA), and postoperative scalp EEG normalization remains inadequately ...
Yi‐qing Yang, Rui Zhang, Haiyan Ma, Lu Yang, Xuefeng Qu, Qiqi Chen, Yan Zhang   +6 more
wiley   +1 more source