Results 11 to 20 of about 65,572 (266)

ELECTROMAGNETIC FIELDS ON FRACTALS [PDF]

open access: yesModern Physics Letters A, 2006
Fractals are measurable metric sets with non-integer Hausdorff dimensions. If electric and magnetic fields are defined on fractal and do not exist outside of fractal in Euclidean space, then we can use the fractional generalization of the integral Maxwell equations. The fractional integrals are considered as approximations of integrals on fractals. We
openaire   +3 more sources

Controlling Electromagnetic Fields

open access: yesScience, 2006
Using the freedom of design that metamaterials provide, we show how electromagnetic fields can be redirected at will and propose a design strategy. The conserved fields—electric displacement field D , magnetic induction field B , and Poynting vector B —are all ...
Pendry, J. B., Schurig, D., Smith, D. R.
openaire   +3 more sources

An ab initio study on resistance switching in hexagonal boron nitride

open access: yesnpj 2D Materials and Applications, 2022
Two-dimensional materials have been widely investigated to implement memristive devices for data storage or neuromorphic computing applications because of their ultra-scaled thicknesses and clean interfaces. For example, resistance switching in hexagonal
Fabian Ducry   +7 more
doaj   +1 more source

Generation of Electromagnetic Field by Microtubules [PDF]

open access: yesInternational Journal of Molecular Sciences, 2021
The general mechanism of controlling, information and organization in biological systems is based on the internal coherent electromagnetic field. The electromagnetic field is supposed to be generated by microtubules composed of identical tubulin heterodimers with periodic organization and containing electric dipoles.
Jan Pokorný, Jiří Pokorný, Jan Vrba
openaire   +3 more sources

Invariants of the electromagnetic field [PDF]

open access: yesJournal of Mathematical Physics, 2014
We present a constructive proof that, in electrodynamics, all of the gauge-invariant Lorentz scalars and pseudoscalars can be expressed as functions of the quadratic ones.
Escobar, C. A., Urrutia, L. F.
openaire   +3 more sources

Plasmonic IQ modulators with attojoule per bit electrical energy consumption

open access: yesNature Communications, 2019
Increasing bandwidth demands in optical communications requires components to be compact with energy-efficient operation. Here, the authors demonstrate plasmonic IQ modulators on a silicon photonics platform with phase shifters, operating with sub-1V ...
Wolfgang Heni   +12 more
doaj   +1 more source

Optical Transmitters without Driver Amplifiers—Optimal Operation Conditions

open access: yesApplied Sciences, 2018
An important challenge in optical communications is the generation of highest-quality waveforms with a Mach–Zehnder modulator with a limited electrical swing (Vpp).
Arne Josten   +4 more
doaj   +1 more source

Picosecond Time‐Scale Resistive Switching Monitored in Real‐Time

open access: yesAdvanced Electronic Materials, 2023
The resistance state of filamentary memristors can be tuned by relocating only a few atoms at interatomic distances in the active region of a conducting filament.
Miklós Csontos   +6 more
doaj   +1 more source

Towards Electrothermal Optimization of a HVDC Cable Joint Based on Field Simulation

open access: yesEnergies, 2021
Extruded high-voltage direct current cable systems transmit electric power over long distances. Numerical field simulation can provide access to the internal electrothermal behavior of cable joints, which interconnect cable sections.
Yvonne Späck-Leigsnering   +4 more
doaj   +1 more source

Modeling and Analytical Description of Parasitic Probe Effects in Measurements of Conductor-Backed Coplanar Waveguides [PDF]

open access: yesAdvances in Radio Science, 2023
On-wafer measurements are of fundamental importance to the characterization of active and passive devices at millimetre-wave frequencies. They have been commonly known to be ambitious and challenging due to the occurrence of parasitic effects originating
G. N. Phung, G. N. Phung, U. Arz
doaj   +1 more source

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