Results 81 to 90 of about 316,883 (321)

The Behaviors of Ionospheric Scintillations Around Different Types of Nightside Auroral Boundaries Seen at the Chinese Yellow River Station, Svalbard

Frontiers in Astronomy and Space Sciences, 2018
Dynamical nightside auroral structures are often observed by the all sky imagers (ASI) at the Chinese Yellow River Station (CYRS) at Ny-Ålesund, Svalbard, located in the polar cap near poleward edge of the nightside auroral oval.
Shishir Priyadarshi, Qing-He Zhang, Yuzhang Ma, Zanyang Xing, Ze-Jun Hu, Guozhu Li   +5 more
doaj   +1 more source

Extended‐Range Thermometry via Dual Er Fluorescence of Oxyfluoride Glass‐Ceramic Optical Fibers

Advanced Optical Materials, EarlyView.
A dual‐channel Yb3+‐Er3+‐based optical fiber thermometer combines visible upconversion and infrared photoluminescence for wide‐range temperature sensing. Yb3+/Er3+‐doped LaF3 or NaLuF4 nanocrystals embedded in transparent glass‐ceramic optical fibers enable reliable operation from room temperature up to 800 K, offering enhanced sensitivity and spectral
Giulio Gorni, Mercedes Sedano, Marcin Kochanowicz, Dominik Dorosz, Carlos Zaldo, María Jesús Pascual   +5 more
wiley   +1 more source

Review of Organic Persistent Phosphors: Classifications by Material Forms, Applications, and Mechanisms

Advanced Optical Materials, EarlyView.
Persistent luminescence (PersL), or afterglow, is the phenomenon of light emission that continues long after the excitation source is removed. This review systematically covers the historical development and major material forms of organic PersL materials, detailing their operating principles, mechanisms, and typical applications.
Cunjian Lin, Jumpei Ueda
wiley   +1 more source

GOLD plasma bubble observations comparison with geolocation of plasma irregularities by back propagation of the high-rate FORMOSA7/COSMIC 2 scintillation data

Frontiers in Astronomy and Space Sciences
Using the high-rate phase and amplitude scintillation data from FORMOSA7/COSMIC two mission and back-propagation method, we geolocate plasma irregularities that cause scintillations.
Qian Wu, Qian Wu, John Braun, Sergey Sokolovskiy, William Schreiner, Nicholas Pedatella, Nicholas Pedatella, Jan-Peter Weiss, Iurii Cherniak, Irina Zakharenkova   +9 more
doaj   +1 more source

Dual‐Emission Switching in a Mn(II)‐Based Hybrid Bromide via Water Coordination: Synthesis, Structure, and Processing

Advanced Optical Materials, EarlyView.
This study reports the synthesis, structure, and optical properties of (pr‐ted)2[MnBr4], a luminescent manganese (II) hybrid halide. It shows green emission under UV and transforms into a red‐emitting hydrated phase with humidity, reversible by heat or vacuum. Structural, photophysical, and theoretical analyses confirm the mechanism.
Ricardo Garsed, Guillermo Hernan, Josefina Perles, José Ignacio Martínez, Aurelio Cabeza Díaz, Eugenio Cantelar, Félix Zamora, Javier Troyano, Pilar Amo‐Ochoa   +8 more
wiley   +1 more source

Detection of Noble Gas Scintillation Light with Large Area Avalanche Photodiodes (LAAPDs)

, 2004
Large Area Avalanche Photodiodes (LAAPDs) were used for a series of systematic measurements of the scintillation light in Ar, Kr, and Xe gas. Absolute quantum efficiencies are derived.
A. Rubbia, Aprile, Belogurov, Benetti, Bressi, Carvalho, Doke, Hurst, Karar, M. Messina, Miyajima, Moerman, Platzman, R. Chandrasekharan, Suzuki, Thomas   +15 more
core   +1 more source

An AI‐Enabled All‐In‐One Visual, Proximity, and Tactile Perception Multimodal Sensor

Advanced Robotics Research, EarlyView.
Targeting integrated multimodal perception of robots, an AI‐enabled all‐in‐one multimodal sensor is proposed. This sensor is capable of perceiving three types of modalities, including vision, proximity, and tactility. By toggling an ultraviolet light and adjusting the camera focus, it switches smoothly between multiple perceptual modalities, enabling ...
Menghao Pu, Tiyong Zhao, Lingxi Zhang, Chaoqun Han, Zhiping Chai, Yifan Zhou, Han Ding, Zhigang Wu   +7 more
wiley   +1 more source

A Review on Millimeter‐Thickness Polycrystalline Perovskite for High‐Performance Direct X‐Ray Detection

Advanced Sensor Research, EarlyView.
Millimeter‐thickness polycrystalline metal halide perovskites (MPMHPs) demonstrate outstanding performance in X‐ray detection and hold promise for applications in high‐resolution imaging at low doses. This review provides a summary of research on X‐ray detectors utilizing MPMHP, encompassing various technologies and optimization strategies. Ultimately,
Yanshuang Ba, Zhuangjie Xu, Fuhui Bai, Xiaoyun Liu, Yanan Gong, Weidong Zhu, He Xi, Dazheng Chen, Chunxiang Zhu, Jincheng Zhang, Yue Hao, Chunfu Zhang   +11 more
wiley   +1 more source

On the role of stochastic Fermi acceleration in setting the dissipation scale of turbulence in the interstellar medium

, 2007
We consider the dissipation by Fermi acceleration of magnetosonic turbulence in the Reynolds Layer of the interstellar medium. The scale in the cascade at which electron acceleration via stochastic Fermi acceleration (STFA) becomes comparable to further ...
Achterberg, Armstrong, Blackman, Boldyrev, Boldyrev, Boldyrev, Boldyrev, Cho, Cho, Elmegreen, Eric G. Blackman, Fermi, Goldreich, Han, Haugen, Haugen, Haugen, LaRosa, Lithwick, Longair, Mac Low, Maron, Maron, Maron, Matthaeus, Minter, Minter, Molnar, Moran, Otte, Reynolds, Reynolds, Rickett, Robert Selkowitz, Schekochihin, Schekochihin, Selkowitz, Spangler, Spitzer, Vestuto   +39 more
core   +1 more source

Quantifying Additive Manufacturing Vapor Plumes Using Laser‐Induced Breakdown Spectroscopy, Synchrotron X‐Ray Radiography and Simulations

Advanced Science, EarlyView.
This study presents a novel in situ laser‐induced breakdown spectroscopy system for monitoring metal vapors produced by the intense laser‐metal interactions in laser powder bed fusion additive manufacturing and laser welding. The insights from this new technique reveal changes in alloy compositions and provide the first in situ validation of multi ...
Anna C. M. Getley, Samy Hocine, Junji Shinjo, Chinnapat Panwisawas, Marta Majkut, Alexander Rack, Peter D. Lee, Michael Towrie, Chu Lun Alex Leung   +8 more
wiley   +1 more source