Results 71 to 80 of about 2,411,897 (179)

A Comparison of Polarization Measures [PDF]

This paper provides a systematic classification of the different measures of polarization based on their properties. Together with the axioms proposed in Duclos, Esteban and Ray (2004) and in Wang and Tsui (2000) we consider three additional properties ...
Joan Esteban, Debraj Ray
core  

A Miniaturized Design for a Terahertz Tri-Mirror CATR with High QZ Characteristics

Sensors
This paper proposes a miniaturized design for a terahertz tri-mirror compact antenna test range (CATR) system, composed of a square-aperture paraboloid primary mirror with a side length of 0.2 m and two shaped mirrors with circular apertures of 0.06 m ...
Zhi Li, Yuan Yao, Haiming Xin, Daocai Xiang   +3 more
doaj   +1 more source

Detection and Anti‐Detection with Microwave‐Infrared Compatible Camouflage Using Asymmetric Composite Metasurface

Advanced Science
Detection and anti‐detection with multispectral camouflage are of pivotal importance, while suffer from significant challenges due to the inherent contradiction between detection and anti‐detection and conflict microwave and infrared (IR) stealth ...
Yanzhao Wang, Huiling Luo, Yanzhang Shao, Hui Wang, Tong Liu, Zhengjie Wang, Kai‐yue Liu, Xiaogang Su, He‐Xiu Xu   +8 more
doaj   +1 more source

A 3-Bit Low-Profile High-Gain Transmissive Intelligent Surface for Beam Focusing and Steering Applications

Micromachines
This paper presents a 3-bit transmissive intelligent surface (TIS) using a novel technique that employs a unit cell comprising loaded semi-loop dipole resonators.
Zaed S. A. Abdulwali, Majeed A. S. Alkanhal   +1 more
doaj   +1 more source

Shadow and polarization images of rotating black holes in Kalb–Ramond gravity illuminated by several thick accretion disks

European Physical Journal C: Particles and Fields
Using ray-tracing techniques, this paper investigates the optical and polarization images of rotating black holes in Kalb–Ramond (KR) gravity illuminated by thick accretion disks.
Chen-Yu Yang, Huan Ye, Xiao-Xiong Zeng
doaj   +1 more source

Integrated metasurface-freeform system enabled multi-focal planes augmented reality display

Opto-Electronic Science
The advent of artificial intelligence (AI) has propelled augmented reality (AR) display technology to a pivotal juncture, positioning it as a contender for the next generation of mobile intelligent terminals. However, the pursuit of advanced AR displays,
Shifei Zhang, Lina Gao, Yidan Zhao, Yongdong Wang, Bo Wang, Junjie Li, Jiaxi Duan, Dewen Cheng, Cheng-Wei Qiu, Yongtian Wang, Tong Yang, Lingling Huang   +11 more
doaj   +1 more source

First high-power helicon results from DIII-D

Nuclear Fusion
More than 0.6 MW of rf power at 476 MHz has been coupled to DIII-D plasmas by launching helicon (whistler) waves with a traveling-wave antenna (comb-line) in the fast-wave polarization (Van Compernolle et al 2021 Nucl. Fusion 61 116034) which resulted in
R.I. Pinsker, B. Van Compernolle, S.X. Tang, J.B. Lestz, C.P. Moeller, C.C. Petty, A. Dupuy, J.P. Squire, A.M. Garofalo, M. Porkolab, J.C. Rost, S.G. Baek, A. Nagy, S. Chowdhury, N.A. Crocker, G.H. Degrandchamp, A.G. McLean, K.R. Gage, A. Marinoni, E.H. Martin, G. Ronchi, the DIII-D Team   +21 more
doaj   +1 more source

Linking Conflict to Inequality and Polarization [PDF]

In this paper we study a behavioral model of conflict that provides a basis for choosing certain indices of dispersion as indicators for conflict. We show that the (equilibrium) level of conflict can be expressed as an (approximate) linear function of ...
Joan Esteban, Debraj Ray
core  

“X-Raying” a Be Star Disk: Fundamental Parameters of the Eclipsing Binary Be Star V658 Car

The Astrophysical Journal
With its two stellar eclipses and two disk attenuations per binary orbit, V658 Carinae stands out as the first clear eclipsing Be + sdOB system. This rare alignment offers a unique opportunity to probe the structure and dynamics of a Be star disk with ...
Tajan H. de Amorim, Alex C. Carciofi, Jonathan Labadie-Bartz, Ariane C. Silva, Felipe Navarete, Saul A. Rappaport, Pamela Querido, Amanda C. Rubio, Jon Bjorkman, Robert Gagliano, Ivan Terentev   +10 more
doaj   +1 more source