Results 61 to 70 of about 43,865 (324)

Tunable Extraordinary Optical Transmission in the Long‐Wavelength Infrared Range Using Electrostatic MEMS Actuation

Advanced Materials Technologies, EarlyView.
A MEMS‐integrated metamaterial filter enables continuous, low‐voltage spectral tuning in the long‐wavelength infrared (LWIR). The device employs extraordinary optical transmission in a dual suspended metasurface stack, where electrostatic actuation precisely controls the intermembrane air gap.
Oleg Bannik, Fedor Kovalev, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Ilya Shadrivov, Mariusz Martyniuk   +6 more
wiley   +1 more source

The Wideband Oscillatory Localization Method Based on Combining Compressed Sensing and Graph Attention Networks

Energies
Due to the increasing integration of new energy sources, the power system now exhibits low inertia, in which the broadband oscillation problem is increasingly significant in the face of the strong coupling of complex and variable power systems, and the ...
Jinggeng Gao, Yong Yang, Honglei Xu, Yingzhou Xie, Chen Zhou, Haiying Dong   +5 more
doaj   +1 more source

Metabolic Connectivity and Hemodynamic-Metabolic Coherence of Human Prefrontal Cortex at Rest and Post Photobiomodulation Assessed by Dual-Channel Broadband NIRS

Metabolites, 2022
Billions of neurons in the human brain form neural networks with oscillation rhythms. Infra-slow oscillation (ISO) presents three main physiological sources: endogenic, neurogenic, and myogenic vasomotions.
Xinlong Wang, Liang-Chieh Ma, Sadra Shahdadian, Anqi Wu, Nghi Cong Dung Truong, Hanli Liu   +5 more
doaj   +1 more source

Inflationary Steps in the Planck Data

, 2013
We extend and improve the modeling and analysis of large-amplitude, sharp inflationary steps for second order corrections required by the precision of the Planck CMB power spectrum and for arbitrary Dirac-Born-Infeld sound speed. With two parameters, the
Hu, Wayne, Miranda, V
core   +1 more source

Classification of Broadband Oscillations Using Wavelet Convolution and Multi‐Channel Attention Network

Energy Internet, EarlyView.
ABSTRACT Accurate identification of broadband oscillation types is a prerequisite for implementing appropriate control strategies. The strongly nonlinear, nonstationary and multi‐modal characteristics of broadband oscillation signals impose higher demands on identification methods. Practical applications face challenges such as coupling effects between
Jinduo Yang, Ji Li, Yiyan Li, Gao Y, Qingyuan Zhang, Yang Kou, Xiao Hu, Weile Liang   +7 more
openalex   +2 more sources

Magnetic Textiles: A Review of Materials, Fabrication, Properties, and Applications

Advanced Materials Technologies, EarlyView.
Magnetic textiles (M‐textiles) are emerging as a programmable materials platform that merges magnetic matter with hierarchical textile structures. This article consolidates magnetic material classes, textile architectures, and fabrication and magnetization strategies, revealing structure–property–function relationships that govern magneto‐mechanical ...
Li Ke, Moses Kumi, Xiaoming Tao, Junhong Pu   +3 more
wiley   +1 more source

An improved ADRC strategy and its parameter tuning for broadband oscillation suppression of direct-drive wind turbine

电力工程技术
An improved active disturbance rejection controller (ADRC) suppression strategy is proposed to address the problem of broadband oscillation between the direct-drive wind turbine and the weak AC power grid.
Xintong YU, Jiahui WU, Guodong LI
doaj   +1 more source

Multi-terminal Heterogeneous Generalized Impedance Modeling and Analysis of MMC-MTDC Transmission Systems

Zhongguo dianli
The prominent risks of broadband oscillation among renewable energy, modular multilevel converter-based multi-terminal high voltage direct current (MMC-MTDC) and AC grid severely constrain the safe and stable operation and efficient accommodation of ...
Guoliang ZHOU, Liping GAO, Yanqiao LIANG, Wenjin LI, Xin WANG   +4 more
doaj   +1 more source

Investigation of a low frequency coherent mode in Wendelstein 7-X with island divertor

Nuclear Fusion, 2023
During the island divertor operation of W7-X, especially in standard magnetic configuration (with 5/5 island chain in the scrape-off-layer (SOL)), quasi-periodic electromagnetic oscillation is observed.
H.M. Xiang, A. Krämer-Flecken, X. Han, T. Windisch, G. Weir, K. Rahbarnia, J. Schilling, H. Thomsen, S.vaz Mendes, A. Knieps, M. Vécsei, M. Otte, S. Zoletnik, G. Anda, D. Dunai, D. Zhang, P. Kornejew, J. Huang, T. Zhang, X.D. Lin, X. Gao, Y. Liang, the W7-X team   +22 more
doaj   +1 more source

Broadband, Continuous-Wave, Mid-Infrared Generation Based on TFBG Spectral Modulation

IEEE Photonics Journal, 2022
We demonstrated a tilted fiber Bragg grating (TFBG)-based modulated amplified spontaneous emission (ASE) source, followed by the broadband, continuous-wave (CW) mid-infrared laser generated by intracavity difference-frequency generation (DFG).
Kaifeng Wang, Xiao Li, Peng Wang, Meng Wang, Weihong Hua, Zefeng Wang, Kai Han   +6 more
doaj   +1 more source