Results 81 to 90 of about 4,787 (262)

Implementation of A Low-Earth Orbit Satellite Chirped Preamble Detector

IEEE Transactions on Aerospace and Electronic Systems
The Internet of Things (IoT) has undergone a significant transformation with the introduction of low-Earth orbit (LEO) satellites as gateways. This transformation fulfills a long-standing promise of IoT, which is to enable the connectivity of objects regardless of their geographical location on Earth.
Matthieu Magnant, Bertrand Le Gal, Guillaume Ferré, Florian Collard   +3 more
openaire   +2 more sources

LEAD: Literature Enhanced Ab Initio Discovery of Nitride Dusting Layers for Enhanced Tunnel Magnetoresistance and Lower Resistance Magnetic Tunnel Junctions

Advanced Materials, EarlyView.
Magnetic tunnel junctions (MTJs) using MgO tunnel barriers face challenges of high resistance‐area product and low tunnel magnetoresistance (TMR). To discover alternative materials, Literature Enhanced Ab initio Discovery (LEAD) is developed. The LEAD‐predicted materials are theoretically evaluated, showing that MTJs with dusting of ScN or TiN on ...
Sabiq Islam, William S. Rogers, Chen‐Yu Hu, Ming‐Yuan Song, Xinyu Bao, Shehrin Sayed, Jean Anne C. Incorvia   +6 more
wiley   +1 more source

Improving Time Transfer Performance for Low Earth Orbit Satellites

2024 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)
Low earth orbit (LEO) provides closer satellites with lower transmission losses and delays while struggling with a smaller field of view (FoV) and larger drag. The related works have been developed in the past utilising LEO satellites for positioning by relaying the signal from GNSS to the ground station.
Triyan Pal Arora, Ivan Petrunin, Jaz Hill-Valler, Esther Anyaegbu   +3 more
openaire   +2 more sources

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Direct Synthesis of High‐Valence Protein@UiO‐66 Composites: Linking Crystallization Pathways to Protein Encapsulation

Advanced Materials, EarlyView.
This work reports a direct, biocompatible method to synthesize UiO‐66, enabling one‐step encapsulation of proteins without compromising crystallinity or activity. Using advanced in situ and ex situ techniques, the study reveals that proteins integrate concurrently with MOF growth, forming crystalline protein@UiO‐66 nanoparticles, and provide insight ...
Jesús Cases Díaz, Jana Glatz, Elisa Merced Olivas, Ramon Pons, Joseph P. Patterson, Mónica Giménez‐Marqués   +5 more
wiley   +1 more source

In orbit reconfigurable dual X and K-band transmitter for Low Earth Orbit multi-mission satellites

Journal of Information and Telecommunication
The forthcoming project by the National Research and Innovation Agency encompasses deploying a constellation of telecommunication microsatellites in Low Earth Orbit.
Roza Widya, Nasser Eriko Nasemudin, Avsar Cem   +2 more
doaj   +1 more source

Thermal‐Driven Diode Polarity Switching From Competing Helical Superconducting States in WTe2/α‐Fe2O3 Heterostructures

Advanced Materials, EarlyView.
A Nb‐proximitized Josephson junction based on a WTe2/α‐Fe2O3 heterostructure exhibits a robust superconducting diode effect with programmable polarity. The diode direction can be trained by magnetic fields and switched by temperature cycling, revealing tunable finite‐momentum pairing states and competing superconducting states in symmetry‐broken ...
Enze Zhang, Grant Z. X. Yang, Zi‐Ting Sun, Xinhou Chen, Shishun Zhao, Chufan Chen, Chenhui Zhang, Fanrui Hu, K. T. Law, Hyunsoo Yang   +9 more
wiley   +1 more source

Frequency Tracking and Synchronization Strategy for Low Earth Orbit Satellites Based on Compensation and Prediction

天地一体化信息网络
As an important supplement to the ground network, the low earth orbit (LEO) satellite network is an important component of the integrated network of space and earth. Due to the high moving speed of LEO satellites, a large Doppler frequency offset and its
DUAN Xianglong, LIU Liu, SU Zhaoyang, CAI Yuchen, GAO Yibo, YIN Yi, NING Lipeng   +6 more
doaj  

Azobenzene's Cross‐Scale Optics and Photonics: Molecular Photoswitching, Mesoscopic Material Motions, and Adaptive Devices

Advanced Materials, EarlyView.
Azobenzene photoswitches translate molecular‐scale E/Z photoisomerization into macroscopic material responses and device‐level photonic functions. This Review highlights how azobenzene research has evolved from molecular photochemistry to photoalignment, mass migration, photomechanics, and heat release, ultimately enabling holography, reconfigurable ...
Heeju Son, Soyul Kwak, Heerin Noh, Minsang Kim, Doyeon Noh, Subhayan Chakraborty, Jaewon Lee, YongDeok Cho, Kyeongsoo Kim, Taewoong Eom, Moonyoung Kim, Jangwon Kim, Hoyoung Lee, Soyoung Lee, Jaehun Kim, Grace G. D. Han, Shin‐Tson Wu, Stefano Oscurato, Arri Priimagi, Marina Saphiannikova, Seungwoo Lee   +20 more
wiley   +1 more source

Application of Thermal Dynamic and Precipitation Parameters from FengYun Satellites in Tropical Cyclone Monitoring and Warning

Tropical Cyclone Research and Review
After more than 50 years of development, FengYun (FY) meteorological satellite has formed a polar orbit and geostationary orbit (GEO) meteorological satellite observation system, with the ability to operate four low earth orbit (LEO) meteorological ...
Suling Ren, Dongyan Mao, Di Xian, Xiang Fang, Bingyun Yang, Zhiqiang Cao, Yawen Ai, Chang Liu, Chunyi Xiang, Qifeng Qian, Xinyan Lü, Jian Shang   +11 more
doaj   +1 more source