Envoys signal no breakthrough on bridging Russia and Ukraine’s political and military differences

The latest U.S.-brokered talks between envoys from Moscow and Kyiv over Russia’s all-out invasion of Ukraine have ended with ...
IEEE

Dynamic Coupling Mechanism Analysis Between Voltage and Frequency in Virtual Synchronous Generator System

Abstract: This letter investigates the dynamic coupling mechanism between voltage and frequency in a virtual synchronous generator (VSG) system, where a unified model is proposed for the analysis of ...
C&EN

First Principles Effective Electronic Couplings for Hole Transfer in Natural and Size-Expanded DNA

Center for Molecular Modeling and Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, and National Center on Nanostructures and ...
IEEE

Collective-Coupling Enhanced Ultrabroadband Linear Polarization Conversion on Zigzag-Split Metasurfaces

Abstract: Polarization manipulation plays a pivotal role in integrated multifunctional devices. Various metasurface-based polarization converters successfully demonstrated high efficiency and broad ...