Results 51 to 60 of about 598,105 (220)

Perspective: Nanophotonic electro-optics enabling THz bandwidths, exceptional modulation and energy efficiencies, and compact device footprints

APL Materials, 2023
The growth of integrated photonics has driven the need for efficient, high-bandwidth electrical-to-optical (EO) signal conversion over a broad range of frequencies (MHz–THz), together with efficient, high bandwidth photodetection.
Larry R. Dalton, Juerg Leuthold, Bruce H. Robinson, Christian Haffner, Delwin L. Elder, Lewis E. Johnson, Scott R. Hammond, Wolfgang Heni, Claudia Hosessbacher, Benedikt Baeuerle, Eva De Leo, Ueli Koch, Patrick Habegger, Yuriy Fedoryshyn, David Moor, Ping Ma   +15 more
doaj   +1 more source

Particle Physics in Intense Electromagnetic Fields [PDF]

Nuovo Cim.A112:977-1000,1999, 2002
The quantum field theory in the presence of classical background electromagnetic fields is reviewed. We give a pedagogical introduction to the Feynman-Furry method of describing non-perturbative interactions with very strong electromagnetic fields. A particular emphasis is given to the case of the plane-wave electromagnetic field for which the charged ...
arxiv   +1 more source

Analysis of the Possibility of Using Various Time-Frequency Transformation Methods to Barkhausen Noise Characterization for the Need of Magnetic Anisotropy Evaluation in Steels

Applied Sciences, 2021
Magnetic Barkhausen Noise (MBN) is a method being currently considered by many research and development centers, as it provides knowledge about the properties and current state of the examined material.
Michal Maciusowicz, Grzegorz Psuj
doaj   +1 more source

Controlling photothermoelectric directional photocurrents in graphene with over 400 GHz bandwidth

Nature Communications
Photodetection in the near- and mid-infrared spectrum requires a suitable absorbing material able to meet the respective targets while ideally being cost-effective.
Stefan M. Koepfli, Michael Baumann, Robin Gadola, Shadi Nashashibi, Yesim Koyaz, Daniel Rieben, Arif Can Güngör, Michael Doderer, Killian Keller, Yuriy Fedoryshyn, Juerg Leuthold   +10 more
doaj   +1 more source

Homogenization of foil windings with globally supported polynomial shape functions [PDF]

Archives of Electrical Engineering
In conventional finite element simulations, foil windings with thin foils and with a large number of turns require many mesh elements. This renders models quickly computationally infeasible.
Jonas Bundschuh, Yvonne Späck-Leigsnering, Herbert De Gersem   +2 more
doaj   +1 more source

What is the velocity of the electromagnetic field? [PDF]

J. Nonlinear Math. Phys. 5 (1998), no. 2, 159-161, 1998
A new definition for the electromagnetic field velocity is proposed. The velocity depends on the physical fields.
arxiv   +1 more source

A Three‐Terminal Memristive Artificial Neuron with Tunable Firing Probability

Advanced Electronic Materials
The human brain facilitates information processing via generating and receiving temporal patterns of short voltage pulses, a.k.a. neural spikes. This approach simultaneously grants low‐power operation as well as a high degree of noise immunity and fault ...
Mila Lewerenz, Elias Passerini, Luca Weber, Markus Fischer, Nadia Jimenez Olalla, Raphael Gisler, Alexandros Emboras, Mathieu Luisier, Miklos Csontos, Ueli Koch, Juerg Leuthold   +10 more
doaj   +1 more source

Electromagnetic Force on a Brane [PDF]

Class. Quantum Grav. 33 (2016) 225008, 2016
A fundamental assumption in the theory of brane world is that all matter and radiation are confined on the four-dimensional brane and only gravitons can propagate in the five-dimensional bulk spacetime. The brane world theory did not provide an explanation for the existence of electromagnetic fields and the origin of the electromagnetic field equation.
arxiv   +1 more source

Scientific evidence invalidates health assumptions underlying the FCC and ICNIRP exposure limit determinations for radiofrequency radiation: implications for 5G

Environmental Health, 2022
In the late-1990s, the FCC and ICNIRP adopted radiofrequency radiation (RFR) exposure limits to protect the public and workers from adverse effects of RFR.
International Commission on the Biological Effects of Electromagnetic Fields (ICBE-EMF)
doaj   +1 more source

Electromagnetic signatures of far-field gravitational radiation in the 1+3 approach [PDF]

Class. Quantum Grav. 32, 015011 (2015), 2014
Gravitational waves from astrophysical sources can interact with background electromagnetic fields, giving rise to distinctive and potentially detectable electromagnetic signatures. In this paper, we study such interactions for far-field gravitational radiation using the 1+3 approach to relativity.
arxiv   +1 more source