Results 51 to 60 of about 36,801 (205)

Polarimetry microlensing of close-in planetary systems

, 2017
A close-in giant planetary (CGP) system has a net polarization signal whose value varies depending on the orbital phase of the planet. This polarization signal is either caused by the stellar occultation or by reflected starlight from the surface of the ...
Hundertmark, Markus, Sajadian, Sedighe
core   +1 more source

Geometric Interpretation and General Classification of Three-Dimensional Polarization States through the Intrinsic Stokes Parameters

Photonics, 2021
In contrast with what happens for two-dimensional polarization states, defined as those whose electric field fluctuates in a fixed plane, which can readily be represented by means of the Poincaré sphere, the complete description of general three ...
José J. Gil
doaj   +1 more source

A Transmissive X-ray Polarimeter Design For Hard X-ray Focusing Telescopes

, 2015
The X-ray Timing and Polarization (XTP) is a mission concept for a future space borne X-ray observatory and is currently selected for early phase study. We present a new design of X-ray polarimeter based on the time projection gas chamber.
Deng, Zhi, Dong, Yongwei, Feng, Hua, Han, Dong, He, Li, Heng, Peiyin, Ji, Jianfeng, Li, Hong, Li, Tenglin, Liu, Yinong, Lu, Fangjun, Wu, Qiong, Zeng, Ming, Zhang, Shuangnan   +13 more
core   +1 more source

Full Poincaré Mueller Polarimetry Using a CCD Camera

Photonics, 2022
A new method is proposed to perform Mueller matrix polarimetry using a Full Poincaré beam (i.e., a non-uniformly polarized beam presenting all polarization states across its section) as a parallel polarization state generator and a charge-coupled device (
Juan Carlos Suárez-Bermejo, Juan Carlos González de Sande, Gemma Piquero, Antonio Virgilio Failla, Massimo Santarsiero   +4 more
doaj   +1 more source

Remote Sensing of Chiral Signatures on Mars [PDF]

, 2012
We describe circular polarization as a remote sensing diagnostic of chiral signatures which may be applied to Mars. The remarkable phenomenon of homochirality provides a unique biosignature which can be amenable to remote sensing through circular ...
Barron, Carpenter, Cockell, Cockell, Costerton, Davey, Degtiarev, Frank Robb, Hall-Stoodley, Hough, James H. Hough, Kelly, Kemp, Landis, Litchfield, Ludmilla Kolokolova, Malin, Martin, Mumma, Norris, Osterloo, Purdie, Sazonov, Shapiro, Sparks, Sparks, Sparks, Thomas A. Germer, Wierzchos, William Sparks, Zahnle   +30 more
core   +2 more sources

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

Advanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit, Yifei Yang, Shawn Li, Yu‐Chia Chen, Qi Jia, Jian‐Ping Wang   +5 more
wiley   +1 more source

Ubiquitous Antiparallel Domains in 2D Hexagonal Boron Nitride Uncovered by Interferometric Nonlinear Optical Imaging

Advanced Materials, EarlyView.
Interferometric second‐harmonic generation (SHG) imaging reveals the ubiquitous formation of antiparallel domains in CVD‐grown 2D hexagonal boron nitride. By resolving lattice orientation and SHG phase, hidden domain structures and disorder become visible over large areas. The SHG intensity quantitatively tracks crystalline quality across growth routes,
Yeri Lee, Juseung Oh, Kyung Yeol Ma, Seung Jin Lee, Eui Young Jung, Yani Wang, Kenji Watanabe, Takashi Taniguchi, Hailin Peng, Hiroki Ago, Ki Kang Kim, Hyeon Suk Shin, Sunmin Ryu   +12 more
wiley   +1 more source

Metasurfaces and Metadevices for Topological Electromagnetic Waves

Advanced Physics Research, EarlyView.
Optical topologies refer to diverse topological localized structures made by diverse parameters of light fields, such as vortices, skyrmions, and hopfions. This article navigates a direction of metasurface‐based integrated devices for generation, manipulation and detection of novel topologies of light, which would be a rapidly growing interdisciplinary
Rensheng Xie, Nilo Mata‐Cervera, Xi Xie, Yijie Shen   +3 more
wiley   +1 more source

Identifying Venous Insufficiency in Head and Neck Reconstruction Flaps Using Machine Learning and Deep Learning Methods

Head &Neck, EarlyView.
ABSTRACT Background Venous insufficiency is a major cause of flap failure in head and neck reconstruction. AI provides a reliable, convenient solution for early detection. Methods Clinical data and postoperative flap photos of head and neck cancer patients (2018–2024) at our center were retrospectively collected, categorized into normal and venous ...
Yurong He, Jugao Fang, Lizhen Hou, Zufei Li, Shizhi He, Yanming Zhao, Qijia Li, Rongjia Li, Xiaoyu Shi, Jiayi Yang, Qi Zhong   +10 more
wiley   +1 more source

The Extreme Polarimeter: Design, Performance, First Results & Upgrades

, 2012
Well over 700 exoplanets have been detected to date. Only a handful of these have been observed directly. Direct observation is extremely challenging due to the small separation and very large contrast involved.
Canovas, H., Homs, L., Jeffers, S. V., Keller, C. U., Min, M., Ovelar, M. de Juan, Rodenhuis, M.   +6 more
core   +1 more source