Results 101 to 110 of about 299,337 (283)

Resonant Gate Drive Circuit with Active Clamping to Increase Efficiency and Reliability

World Electric Vehicle Journal
In power converters with high switching frequency, drive losses constitute a significant portion of the overall power losses. Resonant gate drivers can reduce drive losses, thereby enhancing the efficiency.
Jiaming Zheng, Yi Du, Dachuan Chen, Wucheng Ying, Hui Zhao, Kefu Liu, Jian Qiu   +6 more
doaj   +1 more source

Fast Load Control with Stochastic Frequency Measurement [PDF]

, 2011
Matching demand with supply and regulating frequency are key issues in power system operations. Flexibility and local frequency measurement capability of loads offer new regulation mechanisms through load control.
Low, Steven H., Topcu, Ufuk, Zhao, Changhong   +2 more
core   +1 more source

MXene/PEDOT Functional Coatings on Flexible Microelectrode Arrays for Multianalyte In Vivo Neurochemical Sensing and Electrophysiology

Advanced Functional Materials, EarlyView.
A MXene/PEDOT coating enables multimodal functionality and dual‐analyte detection of dopamine and serotonin in flexible microelectrode arrays while enhancing electrophysiological recording quality. The anti‐fouling, low‐impedance interface overcomes key limitations of conventional coatings, providing a robust and versatile platform to investigate the ...
Ilaria Gatti, Karamullah Eisawi, Umisha Siwakoti, Greyson Jadwin, Ashmita Sigdel, Michela Chiappalone, Deepak Kumbhare, Michael Naguib, Elisa Castagnola   +8 more
wiley   +1 more source

Absolute calibration of a wideband antenna and spectrometer for sky noise spectral index measurements

, 2012
A new method of absolute calibration of sky noise temperature using a three-position switched spectrometer, measurements of antenna and low noise amplifier impedance with a vector network analyzer, and ancillary measurements of the amplifier noise waves ...
Bowman, Judd D., Rogers, Alan E. E.
core   +1 more source

Design Strategies and Emerging Applications of High‐Performance Flexible Piezoresistive Pressure Sensors

Advanced Functional Materials, EarlyView.
Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo, Artur Ciesielski, Paolo Samorì   +2 more
wiley   +1 more source

Self‐Healing and Stretchable Synaptic Transistor

Advanced Functional Materials, EarlyView.
A self‐healing stretchable synaptic transistor (3S‐T) is realized using a p‐PVDF‐HFP‐DBP/PDMS‐MPU‐IU bilayer as gate insulator, where dipole‐dipole interaction enhances polarization to achieve a large memory window. Leveraging its neuronal biomimicry, the synaptic transistor demonstrates electrically compatibility with the biological brain. Furthermore,
Hyongsuk Choo, Sangyong Park, Yoonyi Jeong, Jaepyo Jang, Duhwan Seong, In Soo Kim, Myung‐Gil Kim, Mikyung Shin, Minah Suh, Donghee Son, Jin‐Hong Park   +10 more
wiley   +1 more source

Mitigating power loss in PV arrays using Four Pyramid Sudoku under Partial Shading

Ain Shams Engineering Journal
Partial shading (PS) in solar photovoltaic (PV) systems significantly reduces power generation and conversion efficiency. This study presents a novel Four Pyramid Sudoku (FPS) methodology to mitigate shading effects by optimizing the array layout while ...
Karthick. B, M. Sudhakaran
doaj   +1 more source

Residual‐Lithium‐to‐LiF Conversion Enables a LiF–Fluorinated Carbon Interphase for Reconstruction‐Resistant Ni‐Rich Cathodes

Advanced Functional Materials, EarlyView.
A fluorine‐rich acrylate monomer (PFHEA) was solvent‐free applied to NCM90 and thermally decomposed under Ar to convert residual lithium into LiF and form a pre‐built LiF/fluorinated amorphous carbon (LiF/FC) interphase. The LiF/FC layer suppresses NiO rock‐salt reconstruction and microcrack propagation, lowers interfacial resistance, and improves Li ...
Pangyu Kim, Juyeon Han, Junhyeok Kim, Younghoon Kim, Eunha Seo, Dain Kim, Jeeyoung Yoo   +6 more
wiley   +1 more source

Reconfiguration Method to Extract More Power from Partially Shaded Photovoltaic Arrays with Series-Parallel Topology

Energies, 2019
A photovoltaic (PV) array is composed of several panels connected in series-parallel topology in most actual applications. However, partial shading of a PV array can dramatically reduce power generation.
Xiaoguang Liu, Yuefeng Wang
doaj   +1 more source

Device calibration impacts security of quantum key distribution

, 2011
Characterizing the physical channel and calibrating the cryptosystem hardware are prerequisites for establishing a quantum channel for quantum key distribution (QKD).
C. H. Bennett, Carlos Wiechers, Christoffer Wittmann, Christoph Marquardt, D. Gottesman, Dominique Elser, Gerd Leuchs, Lars Lydersen, Nitin Jain, Vadim Makarov   +9 more
core   +1 more source