Results 51 to 60 of about 2,062 (173)

Developments in Scope and Availability of HF Radar Wave Measurements and Robust Evaluation of Their Accuracy

open access: yesRemote Sensing, 2023
HF radar systems form part of many operational coastal monitoring systems providing near-real-time surface currents for many useful applications. Although wave measurements have been possible with these systems for many years, they have not yet been ...
Lucy R. Wyatt, J. J. Green
doaj   +1 more source

Electro‐Chemo‐Mechanical Coupling in Composite Cathodes of Sulfide‐Based All‐Solid‐State Batteries: Pathways, Degradation, and Design Rules

open access: yesAdvanced Science, EarlyView.
This review provides an integrated framework for achieving superior electrochemical performance in sulfide‐based all‐solid‐state batteries. It first delineates mechano‐electrochemical failure modes of cathode active materials and solid electrolytes, then outlines engineering principles for particle morphology, electronic and ionic conduction, and ...
Gawon Song   +4 more
wiley   +1 more source

Liquid Metals in Radio Frequency Applications: A Review of Physics, Manufacturing, and Emerging Technologies

open access: yesAdvanced Electronic Materials, EarlyView.
This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley   +1 more source

Emerging Memory and Device Technologies for Hardware‐Accelerated Model Training and Inference

open access: yesAdvanced Electronic Materials, EarlyView.
This review investigates the suitability of various emerging memory technologies as compute‐in‐memory hardware for artificial intelligence (AI) applications. Distinct requirements for training‐ and inference‐centric computing are discussed, spanning device physics, materials, and system integration.
Yoonho Cho   +6 more
wiley   +1 more source

Multi-frequency observations of E-region HF radar aurora [PDF]

open access: yesAnnales Geophysicae, 2003
Multi-frequency observations of E-region coherent backscatter from decametre waves reveal that auroral echoes tend to comprise two spectral components superimposed, one at low Doppler shifts, below 250 ms-1, and the other Doppler shifted to near ...
S. E. Milan, M. Lester, N. Sato
doaj   +1 more source

HF. Radar Mapping of Extensive Ocean Windfields

open access: yesCoastal Engineering 1980, 1980
The possibility of deriving parameters of sea wave spectra remotely from characteristics of radio waves at high frequency (HF) scattered from the sea surface was first raised when Crombie (1955) correctly deduced that Doppler frequency shifts in the signal returned from short range in his HF radar resulted uniquely from components of the sea wave ...
P.E. Dexter, R.C. Casey
openaire   +2 more sources

Fluoro‐Functionalized Polyether Electrolytes Enabling High‐Energy‐Density Solid‐State Lithium‐Metal Batteries

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Fluoro‐functionalized polyether electrolytes, which combine fluorine‐ and ether‐containing groups, achieve enhanced oxidative stability, high ionic conductivity, and superior interfacial stability. Due to their non‐flammability, remarkable flexibility, ease of processing, and design versatility, polymer‐based electrolytes containing polyethers have ...
Nannan Geng   +8 more
wiley   +1 more source

Mapping ionospheric backscatter measured by the SuperDARN HF radars – Part 2: Assessing SuperDARN virtual height models [PDF]

open access: yesAnnales Geophysicae, 2008
The Super Dual Auroral Radar Network (SuperDARN) network of HF coherent backscatter radars form a unique global diagnostic of large-scale ionospheric and magnetospheric dynamics in the Northern and Southern Hemispheres.
T. K. Yeoman   +7 more
doaj   +1 more source

Interfacial Solvent Molecular Engineering via High‐Safety Dense Separators for High‐Rate Lithium‐Ion Batteries

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
The dense PPS‐separator prevents thermal runaway by allowing electron transfer through the steel needle during penetration, while the residual electrolyte enables brief ion migration and Joule heating, causing rapid electrolyte vaporization, collapse of the ion transport network, and a sharp drop in ionic conductivity.
Haitao Zhou   +10 more
wiley   +1 more source

Distributed Shipborne HFHSSWR Localisation Method Based on Gaussian Markov Fields

open access: yesIET Radar, Sonar & Navigation
This paper investigates a distributed shipborne high‐frequency hybrid surface‐surface wave radar (HFHSSWR) model that combines shared sky wave paths with distinct shipboard surface wave paths.
Longyuan Xu   +3 more
doaj   +1 more source

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