Results 91 to 100 of about 112,422 (307)

Positively Charged Polymer‐Brush MOFs for Large‐Area, Pressure‐Resistant Gas Separation Membranes

Advanced Materials, EarlyView.
A universal POPA strategy enables positively charged polymer‐brush MOFs with self‐adaptive interfacial interlocking to resist aggregation under fast processing. This design ensures seamless dispersion within large‐area selective layers, achieving 1 m‐wide roll‐to‐roll fabrication of pressure‐resistant MMCMs with tunable CO2 separation performance ...
Yi Yang, Ye Yuan, Yuxiu Sun, Fei Shi, Chenyang Song, Weifan Wang, Qinghua Li, Menglong Sheng, Zhihua Qiao, Jingwei Hou, Anthony K. Cheetham, Zhi Wang   +11 more
wiley   +1 more source

Design and Damping Analysis of a New Eddy Current Damper for Aerospace Applications

Latin American Journal of Solids and Structures
In order to reduce the structural vibrations of a mechanical system used in aerospace, a new sketch of eddy current damper (ECD), consisting of one cylindrical permanent magnet, two ring-shape copper plates, one axial transmission shaft and ...
Qiang Pan, Tian He, Denghong Xiao, Xiandong Liu   +3 more
doaj   +1 more source

Sub-synchronous resonance mitigation by a STATCOM in doubly fed induction generator-based wind farm connected to a series-compensated transmission network

The Journal of Engineering, 2019
With the fast development of wind power generation, large-scale wind farms are connected to an electrical network which is series compensated to increase transmission capacity.
Benfeng Gao, Yunting Hu
doaj   +1 more source

Passive stabilization for large space systems [PDF]

The optimal tuning of multiple tuned-mass dampers for the transient vibration damping of large space structures is investigated. A multidisciplinary approach is used.
Gronet, M. J., Marinos, G. M., Sesak, J. R.   +2 more
core   +1 more source

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

Nonequilibrium Dynamics of Charged Particles in an Electromagnetic Field: Causal and Stable Dynamics from 1/c Expansion of QED

, 2011
We derive from a microscopic Hamiltonian a set of stochastic equations of motion for a system of spinless charged particles in an electromagnetic (EM) field based on a consistent application of a dimensionful 1/c expansion of quantum electrodynamics (QED)
Fleming, C. H., Hu, B. L., Johnson, P. R.   +2 more
core   +1 more source

All‐Optical Reconfigurable Physical Unclonable Function for Sustainable Security

Advanced Materials, EarlyView.
An all‐optical reconfigurable physical unclonable function (PUF) is demonstrated using plasmonic coupling–induced sintering of optically trapped gold nanoparticles, where Brownian motion serves as a robust entropy source. The resulting optical PUF exhibits high encoding density, strong resistance to modeling attacks, and practical authentication ...
Jang‐Kyun Kwak, Changgyun Moon, Hyun‐Bin Yu, Sunkook Kim, Dong‐Hwan Kim   +4 more
wiley   +1 more source

Effect analysis of Coulomb damping in shock isolator with different stiffness

Zhongguo Jianchuan Yanjiu, 2019
[Objectives] In the passive shock isolator,stiffness and damping are important factors to reduce the transient shock and reduce the vibration transmission.
Wen Zhaodong, Liu Hongquan, Yan Ming, Zhang Chunhui, Zhanglei   +4 more
doaj   +1 more source

Analysis of the passive stabilization of the long duration exposure facility [PDF]

The nominal Long Duration Exposure Facility (LDEF) configurations and the anticipated orbit parameters are presented. A linear steady state analysis was performed using these parameters.
Siegel, S. H., Vishwanath, N. S.
core   +1 more source

Near-bandgap wavelength-dependent studies of long-lived traveling coherent longitudinal acoustic phonon oscillations in GaSb/GaAs systems

, 2007
We report first studies of long-lived oscillations in optical pump-probe measurements on GaSb-GaAs heterostructures. The oscillations arise from a photogenerated coherent longitudinal acoustic phonon wave, which travels from the top surface of GaSb ...
A. Wood, I. Perakis, J. K. Furdyna, J. K. Miller, J. Qi, N. Tolk, T. V. Shahbazyan, X. Liu, Y. Xu, Y.-J. Cho   +9 more
core   +1 more source