Results 51 to 60 of about 9,968,007 (375)

The interaction between electromagnetic fields at megahertz, gigahertz and terahertz frequencies with cells, tissues and organisms: risks and potential

Journal of the Royal Society Interface, 2017
Since regular radio broadcasts started in the 1920s, the exposure to human-made electromagnetic fields has steadily increased. These days we are not only exposed to radio waves but also other frequencies from a variety of sources, mainly from ...
Sergii Romanenko, Ryan Begley, A. Harvey, L. Hool, V. Wallace   +4 more
semanticscholar   +1 more source

Thin Dielectric Layers Evaluation Using Tunable Split-Ring Resonator Based Metasurface in THz Frequency Range

Applied Sciences, 2022
The paper presents the evaluation of thin dielectric layers using a tunable split-ring resonator-based metasurface in the THz frequency range. Tunable unit cells of a metasurface allow its resonant frequency variation using some external excitation. This
Paulina Gora, Przemyslaw Lopato
doaj   +1 more source

The Structure of an Electromagnetic Field [PDF]

Proceedings of the National Academy of Sciences, 1918
This elementary field corresponds to a state of affairs in which electric charges of a concentrated form are created and travel along straight lines with the velocity of light, the directions of these lines being specified by the different values of the unit vector s.
openaire   +4 more sources

Relativistically expanding cylindrical electromagnetic fields

, 2009
We study relativistically expanding electromagnetic fields of cylindrical geometry. The fields emerge from the side surface of a cylinder and are invariant under translations parallel to the axis of the cylinder.
Aly, Contopoulos, Fabian, Fendt, Goodwin, Gourgouliatos, Gourgouliatos, Hurley, K. N. Gourgouliatos, Kalapotharakos, Komissarov, LeBlanc, Lovelace, Lovelace, Low, Lynden-Bell, Lynden-Bell, Lyutikov, McKinney, Meliani, Palmer, Prendergast, Priest, Tsinganos, Uzdensky, Uzdensky, Vlahakis, Vlahakis, Wolfson   +28 more
core   +1 more source

Bit- and Power-Loading—A Comparative Study on Maximizing the Capacity of RSOA Based Colorless DMT Transmitters

Applied Sciences, 2017
We present a comparative study of the capacity increase brought by bit- and power-loading discrete multi-tone (DMT) modulation for low-cost colorless transmitters.
Simon Arega Gebrewold, Romain Bonjour, Romain Brenot, David Hillerkuss, Juerg Leuthold   +4 more
doaj   +1 more source

Classification of Grain-Oriented Electrical Steel Sheets by Magnetic Barkhausen Noise Using Time-Frequency Analysis and Selected Machine Learning Algorithms

Applied Sciences, 2022
In this paper, a combination of Magnetic Barkhausen Noise (MBN) and several classical machine learning (ML) methods were used to evaluate both the grade and the magnetic directions of conventional and high grain oriented electrical sheets subjected to ...
Michal Maciusowicz, Grzegorz Psuj
doaj   +1 more source

Plant Responses to High Frequency Electromagnetic Fields

BioMed Research International, 2016
High frequency nonionizing electromagnetic fields (HF-EMF) that are increasingly present in the environment constitute a genuine environmental stimulus able to evoke specific responses in plants that share many similarities with those observed after a ...
A. Vian, E. Davies, M. Gendraud, P. Bonnet   +3 more
semanticscholar   +1 more source

Fractional Integro-Differential Equations for Electromagnetic Waves in Dielectric Media

, 2011
We prove that the electromagnetic fields in dielectric media whose susceptibility follows a fractional power-law dependence in a wide frequency range can be described by differential equations with time derivatives of noninteger order.
A. A. Kilbas, A. A. Stanislavsky, A. Carpinteri, A. K. Jonscher, A. K. Jonscher, A. K. Jonscher, G. M. Zaslavsky, P. Debye, R. R. Nigmatullin, R. R. Nigmatullin, R. R. Nigmatullin, S. G. Samko, V. E. Tarasov, V. E. Tarasov, V. V. Novikov, Y. Yilmaz   +15 more
core   +1 more source

Rotation of electromagnetic fields and the nature of optical angular momentum [PDF]

, 2010
The association of spin and orbital angular momenta of light with its polarization and helical phase fronts is now well established. The problems in linking this with electromagnetic theory, as expressed in Maxwell's equations, are rather less well known.
Barut AO, Bateman H, Biedenharn LC, Cohen-Tannoudji C, Heaviside O, Jackson JD, Jauch JM, Milonni PW, Power EA, Rose ME, Simmons JW, Stephen M. Barnett, Yilmaz H   +12 more
core   +1 more source

Compact and ultra-efficient broadband plasmonic terahertz field detector

Nature Communications, 2019
Most efficient terahertz detection schemes rely on complex free space optics and require high-power lasers. Here, the authors report an integrated plasmonic terahertz detector on a silicon photonics platform, with 2.5 THz bandwidth and a 65 dB dynamical ...
Yannick Salamin, Ileana-Cristina Benea-Chelmus, Yuriy Fedoryshyn, Wolfgang Heni, Delwin L. Elder, Larry R. Dalton, Jérôme Faist, Juerg Leuthold   +7 more
doaj   +1 more source