Results 41 to 50 of about 2,709 (250)

A Monte Carlo Emissivity Model for Wind-Roughened Sea Surface

Sensors, 2019
Sea surface emissivity (SSE) is a key variable in the estimation of sea surface temperature and the sea surface radiation budget. A physical base SSE model with adequate accuracy and acceptable computational efficiency is highly desired.
Jie Cheng, Xiaolong Cheng, Xiangchen Meng, Guanhua Zhou   +3 more
doaj   +1 more source

Mechanistic Control of C─H Bond Activation and C─C Coupling in Light‐Driven Methane Conversion to C2+ Products over Multifunctional Photocatalysts

Advanced Functional Materials, EarlyView.
Methane photocatalytic activation under mild conditions remains a formidable challenge in the synthesis of solar fuels. In this review, we emphasize the growing importance of multifunctional materials and hybrid systems within a unified mechanistic framework that integrates selective C─H bond activation, formation and control of intermediates, C─C ...
Di Hu, Yuheng Jiang, Vitaly V. Ordomsky, Bastian Mei, Zhiyong Tang, Andrei Y. Khodakov   +5 more
wiley   +1 more source

High‐Performance n‐Type Organic Thermoelectrics Enabled by Control Over Microstructure, Orientation and Contact Plane in Naphthalenediimide‐Bithiazole‐Copolymer Films

Advanced Functional Materials, EarlyView.
Effective control over the crystalline contact plane and microstructure of a naphthalenediimide‐bithiazole copolymer enables high‐performance n‐type thermoelectrics. While rubbing alignment induces a detrimental edge‐on orientation, subsequent solvent vapor‐induced re‐orientation facilitates a favorable mixed face‐on/edge‐on morphology.
Suhao Wang, Said Oummouch, Huan Wei, Karl Thorley, Adam Marks, Arianna Magni, Xiuming Sun, Alessandra Pistillo, Bruno Schmaltz, Olivier Bardagot, Sabine Ludwigs, Alberto Salleo, Yuanyuan Hu, Martin Brinkmann   +13 more
wiley   +1 more source

Polarimetric Signatures of Bulk Comptonization from within the Plunging Region of Accreting Black Holes

The Astrophysical Journal
Inverse Compton scattering by the thermal motions of electrons is believed to produce polarized hard X-rays in active galactic nuclei and black hole binaries.
Ho-Sang Chan, Mitchell C. Begelman, Jason Dexter   +2 more
doaj   +1 more source

The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline

Journal of Synchrotron Radiation
A grazing-incidence Rowland spectrometer with a collimating element for resonant inelastic soft X-ray scattering at the Veritas beamline at MAX IV, Lund, Sweden, is presented.
Marcus Agåker, Carl-Johan Englund, Victor Ekholm, Ludvig Kjellsson, Peter Sjöblom, Louisa Pickworth, Johan Söderström, Niklas Johansson, Anirudha Ghosh, Takashi Tokushima, Marco Caputo, Johan Forsberg, Gábor Felcsuti, Pierre Fredriksson, Suleyman Malki, Nial Wassdahl, Conny Såthe, Jan-Erik Rubensson   +17 more
doaj   +1 more source

Recognition of Volumetric Scattering of Lunar Regolith Media in the PSR via Fully Polarimetric SAR Data

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2022
Data of fully polarimetric synthetic aperture radar onboard Chandrayaan-2 make it feasible to analyze the geometric and physical properties of the lunar soil layer. A specific mission of Chandrayaan-2 is to investigate if there is water–ice in the
Niutao Liu, Feng Xu, Ya-Qiu Jin
doaj   +1 more source

Molecular Rotors: From Newtonian Fluids to Functional Materials as Viscosity and Temperature Sensing Tools

Advanced Functional Materials, EarlyView.
Molecular rotors are fluorescent molecules that are sensitive to viscosity and temperature variations in the environment. They exhibit a direct correlation between fluorescence and viscosity within Newtonian fluids. However, this correlation becomes less straightforward in complex systems.
Flavia Di Scala, Alice Briole, Valerii Myndrul, Thomas J. Cleij, Hanne Diliën, Bérengère Abou, Bart van Grinsven   +6 more
wiley   +1 more source

A Versatile Propagation Channel Simulator for MIMO Link Level Simulation

EURASIP Journal on Wireless Communications and Networking, 2007
This paper presents a propagation channel simulator for polarized bidirectional wideband propagation channels. The generic channel model implemented in the simulator is a set of rays described by geometrical and propagation features such as the delay, 3D
Jean-Marc Conrat, Patrice Pajusco
doaj   +2 more sources

Sulfur‐Free Ultrahigh‐Refractive‐Index Polymers Enabled by Densely Packed Oxygen‐Bridged Dibenzofuran‐Cardo Architectures

Advanced Functional Materials, EarlyView.
A new class of sulfur‐free, oxygen‐bridged dibenzofuran‐based polymers is developed for ultrahigh‐refractive‐index applications. The rigid π‐extended architecture and enhanced molecular polarizability enable exceptional optical performance, combining refractive indices up to 1.848 with high Abbe numbers and full visible transparency. This work offers a
Hend A. Hegazy, Gyeongsoo Kim, Sooyoung Lee, Mohamed R. Elmasry, Youn‐Chul Kim, Changsik Song   +5 more
wiley   +1 more source

Accuracy of depolarization and delay spread predictions using advanced ray-based modeling in indoor scenarios

EURASIP Journal on Wireless Communications and Networking, 2011
This article investigates the prediction accuracy of an advanced deterministic propagation model in terms of channel depolarization and frequency selectivity for indoor wireless propagation.
Mani Francesco, Quitin François, Oestges Claude   +2 more
doaj