Results 191 to 200 of about 384,291 (294)

StorjLedger: An Innovative Distributed Storage Ecosystem That Overcomes Blockchain Trade‐Offs Using Erasure‐Coded Sharding and Proof‐of‐Storage Consensus

open access: yesEngineering Reports, Volume 7, Issue 10, October 2025.
StorjLedger leverages erasure‐coded sharding and Proof‐of‐Storage to deliver nearly 1000 transactions per second with sub‐second latency, 98% data redundancy, and 76% lower storage costs, resolving the blockchain trilemma by harmonizing scalability, security, and decentralization.
Saha Reno, Koushik Roy
wiley   +1 more source

Space‐Time‐Modulated Metasurface Enabled High‐Performance Near‐Field Focusing with Enhanced Phase Modulation

open access: yesLaser &Photonics Reviews, Volume 19, Issue 19, October 7, 2025.
This study leverages STM technology to enhance NFF performance by enabling continuous phase control at the +1st harmonic without increasing hardware complexity. It overcomes the limitations of conventional 1‐bit TMs caused by phase quantization errors and demonstrates that even compact arrays can achieve effective focusing, highlighting the strong ...
Manting Wang   +7 more
wiley   +1 more source

A Dual‐Programmable Metasurface with Duplex Beam Steering for Full‐Space Terahertz Communications

open access: yesLaser &Photonics Reviews, Volume 19, Issue 20, October 20, 2025.
A dual‐programmable terahertz metasurface enables independent control of transmission and reflection beam steering. It breaks through the limitations in resonant tunability by polarization allocation with 2D‐electron‐gas tuning, enabling a single resonator to incorporate bidirectional operating modes.
Luyang Wang   +15 more
wiley   +1 more source

Insight into Mo2C Nanoplates Growth by Means of Scanning Electrochemical Cell Microscopy for High‐Resolution Electrocatalytic Hydrogen Evolution Activity Mapping

open access: yesSmall Science, Volume 5, Issue 10, October 2025.
High‐resolution scanning electrochemical cell microscopy reveals a size‐activity relationship in hexagonal α‐Mo2C nanoplates for the hydrogen evolution reaction (HER). Smaller nanoplates (<10 μm) show superior catalytic activity due to minimal native oxide species formation, low presence of step‐edges, and residual material.
Geovane Arruda de Oliveira   +8 more
wiley   +1 more source

Space Vector‐Signal Generator Based on High‐Order Amplitude‐Phase Modulated Programmable Metasurface

open access: yesSmall Structures, Volume 6, Issue 10, October 2025.
A high‐order amplitude‐phase modulated metasurface offers precise amplitude and phase control, enabling a spatial vector‐signal generator for efficient baseband and complex signal generation. This innovative approach enhances flexibility and dynamic adaptability in RF modulation, demonstrating significant potential for high‐speed wireless communication,
Zhen Jie Qi   +7 more
wiley   +1 more source

Measurements of Forbush Decrease Events at the Center of the South Atlantic Magnetic Anomaly With Muon Detectors

open access: yesSpace Weather, Volume 23, Issue 10, October 2025.
Abstract We present the construction and validation of a low‐cost muon detector in Paraguay, located at the center of the South Atlantic Magnetic Anomaly (SAMA), where the geomagnetic cutoff rigidity R $R$ is 9.63 GV. The detector consists of plastic scintillator plates coupled with silicon photomultipliers for light detection.
Jorge Molina   +12 more
wiley   +1 more source

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