Results 101 to 110 of about 76,123 (313)

Ultrafast nonlinear optics in semiconductors [PDF]

open access: yes, 1993
The nonlinear optical phenomena which occur in semiconductor materials on a femtosecond to picosecond timescale have recently generated much interest, especially in the field of telecommunications where the development of all-optical switching devices ...
Walmsley, M., Walmsley, M
core  

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

open access: yesAdvanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau   +9 more
wiley   +1 more source

Analysis of electromagnetic and thermal processes in a grounding device at a voltage of 10 kV

open access: yesВестник Самарского государственного технического университета. Серия: Технические науки
The paper considers electromagnetic and thermal processes in the system of current-carrying elements of the grounding device in the medium voltage switchgear cabinet, occurring during a short circuit.
А. А. Bazarov, O. V. Belyi
doaj   +1 more source

Role of the Recombination Zone in Organic Light‐Emitting Devices

open access: yesAdvanced Materials, EarlyView.
This review summarizes the critical role of the recombination zone in organic light‐emitting diodes (OLEDs). We highlight that broadening the recombination zone in OLEDs based on emissive layers with balanced charge transport and high photoluminescence quantum yields provides a promising route toward achieving both long operational lifetime and high ...
Yungui Li, Karl Leo
wiley   +1 more source

Permanent Magnets in Sustainable Energy: Comparative Life Cycle Analysis

open access: yesEnergies
This study addresses the environmental challenges associated with high-performance rare-earth magnets, particularly NdFeB, which are essential in green and digital technologies.
Svetlana Orlova, Anton Rassõlkin
doaj   +1 more source

Resonant reactive power amplifier. Analysis of electromagnetic processes

open access: yesElektrotehnìka ta Elektroenergetika, 2019
Purpose. Analysis of electromagnetic processes and the theoretical substantiation of the fundamental possibility of the reactive power resonant amplification of harmonic signals in a circuit of two real inductively coupled sequential active-reactive ...
Yu.V. Batygin   +4 more
doaj   +1 more source

Magneto-electric network models in electromagnetism

open access: yes, 2005
Network models of an electromagnetic field containing both eddy and displacement currents are presented. The models consist of magnetic and electric networks coupled via sources.
Sykulski, J.K., Demenko, A.
core  

Aplicação coordenada das técnicas de medição, simulação numérica e otimização, para o mapeamento do ambiente eletromagnético em hospitais [PDF]

open access: yes, 2011
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Engenharia Elétrica, Florianópolis, 2011A presente tese versa sobre a avaliação do ambiente eletromagnético em estabelecimentos assistenciais de ...
Valente Junior, Wilson
core  

Ultra‐Confinement of Polaritons in Single Atomic Layer Ag Photonic Quantum Dots

open access: yesAdvanced Materials, EarlyView.
Strong confinement of surface phonon polaritons of silicon carbide was achieved in photonic quantum dots fabricated from van der Waals heterostructure of epitaxial graphene over single‐atomic layer silver. Scattering‐type scanning near‐field optical microscopy combined with an analytical approach, developed to reveal local propagation constants with ...
Xinyi Li   +10 more
wiley   +1 more source

Chiral Microneedle Arrays With Terahertz Chiroptical Activity With Chiral‐Plasmon‐Chiral‐Phonon Resonance

open access: yesAdvanced Materials, EarlyView.
ABSTRACT Microneedle arrays (MNAs) is a rapidly emerging technology with broad biomedical applications in drug delivery and biosensing. With sub‐millimeter dimensions and periodicity, MNAs possess geometries nearly ideal for biomedical devices operating within the terahertz (THz) spectral window.
Sang Hyun Lee   +6 more
wiley   +1 more source

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