Results 71 to 80 of about 10,262,280 (355)

Prospects of Electric Field Control in Perpendicular Magnetic Tunnel Junctions and Emerging 2D Spintronics for Ultralow Energy Memory and Logic Devices

Advanced Functional Materials, EarlyView.
Electric control of magnetic tunnel junctions offers a path to drastically reduce the energy requirements of the device. Electric field control of magnetization can be realized in a multitude of ways. These mechanisms can be integrated into existing spintronic devices to further reduce the operational energy.
Will Echtenkamp, Brahmdutta Dixit, Yifei Yang, Deyuan Lyu, Thomas Peterson, Qi Jia, Yu‐Chia Chen, Jian‐Ping Wang   +7 more
wiley   +1 more source

Study of Excitation Characteristics of Traction Machine/Drive Systems

Energies, 2019
In order to accurately evaluate the performance of a traction machine/drive system, it is necessary to have an accurate excitation source which considers current harmonics.
Wenying Jiang, Qiqi Guo, Zhen Zhang
doaj   +1 more source

Appearance of Negative Differential Conductivity in Graphene Nanoribbons at High-Harmonics

, 2012
We theoretically study current dynamics of graphene nanoribbons subject to bias dc and ac driven fields. We showed that graphene nanoribbons exhibit negative high-harmonic differential conductivity.
Abukari, S. S., Mensah, S. Y., Rabiu, M.
core   +1 more source

Reconfigurable Three‐Dimensional Superconducting Nanoarchitectures

Advanced Functional Materials, EarlyView.
3D superconducting nanostructures offer new possibilities for emergent physical phenomena. However, fabricating complex geometries remains challenging. Here 3D nanoprinting of complex 3D superconducting nanoarchitectures is established. As well as propagating superconducting vortices in 3D, anisotropic superconducting properties with geometric ...
Elina Zhakina, Luke Alexander Turnbull, Weijie Xu, Markus König, Paul Simon, Wilder Carrillo‐Cabrera, Amalio Fernández‐Pacheco, Uri Vool, Dieter Suess, Claas Abert, Vladimir M. Fomin, Claire Donnelly   +11 more
wiley   +1 more source

Vibration Model of ±800 kV Converter Transformers Under Varying Load Conditions

Energies
Understanding the relationship between current harmonics and vibration is crucial for accurately modeling converter transformer vibrations, particularly under varying load conditions. In this study, vibrations of six converter transformers were monitored
Ning Wang, Jing Zheng, Yao Yuan
doaj   +1 more source

An Efficient, Scalable Time-Frequency Method for Tracking Energy Usage of Domestic Appliances Using a Two-Step Classification Algorithm

Energies, 2014
Load monitoring is the practice of measuring electrical signals in a domestic environment in order to identify which electrical appliances are consuming power.
Paula Meehan, Conor McArdle, Stephen Daniels   +2 more
doaj   +1 more source

Double Helical Plasmonic Antennas

Advanced Functional Materials, EarlyView.
Plasmonic double helical antennas funnel circularly polarized light to the nanoscale, offering strong chiroptical interaction and directional light emission. Extending a single helix design tool, this study combines numerical modeling with experimental validation, revealing large, broadband dissymmetry factors in the visible range.
Aleksei Tsarapkin, Luka Zurak, Krzysztof Maćkosz, Lorenz Löffler, Victor Deinhart, Ivo Utke, Thorsten Feichtner, Katja Höflich   +7 more
wiley   +1 more source

Harmonic and reactive behavior of the quasiparticle tunnel current in SIS junctions [PDF]

, 2016
In this paper, we show theoretically and experimentally that the reactive quasiparticle tunnel current of the superconductor tunnel junction could be directly measured at specific bias voltages for the higher harmonics of the quasiparticle tunnel current.
Belitsky, Victor, Desmaris, Vincent, Pavolotsky, Alexey, Rashid, Hawal   +3 more
core   +2 more sources

Miniature Nanomesh Mechano‐Acoustic Sensor with Wide Linear Dynamic Range, Broad Bandwidth, and Flat Frequency Response

Advanced Functional Materials, EarlyView.
A miniaturized mechano‐acoustic sensor is developed using an electrospun PVDF nanomesh as the diaphragm in a capacitive sensor structure. Unlike conventional nanomesh‐based sensors, it achieves high linear sensitivity, a broad and flat frequency response, and a compact form factor.
Jeng‐Hun Lee, Kang Hyuk Cho, Seojin Yun, Siyoung Lee, Woongji Kim, Yunsik Kim, Wonkyu Moon, Yoonyoung Chung, Kilwon Cho   +8 more
wiley   +1 more source

DC-side Harmonic Analysis of SPWM-mode Traction Inverter

机车电传动, 2016
Based on energy conservation principle, DC input harmonics current of the SPWM-mode traction inverter was deducedwith AC-side instantaneous power calculation, and harmonics frequency spectrum of DC-side current was revealed.
GAO Daoxing
doaj