Results 291 to 300 of about 229,340 (317)

A fully integrated whole-head helium OPM MEG: a performance assessment compared to cryogenic MEG. [PDF]

Front Med Technol
Bonnet M, Schwartz D, Gutteling T, Daligault S, Labyt E.   +4 more
europepmc   +1 more source

AI-Assisted Passive Magnetic Distance/Position Sensor. [PDF]

Sensors (Basel)
Qiu C, Qian Z, Qi Q, Wang R, Li X, Bai R.   +5 more
europepmc   +1 more source

Ultrasensitive metasurface sensor based on quasi-bound states in the continuum. [PDF]

Nanophotonics
Li N, Chen H, Zhao Y, Wang Y, Su Z, Liu Y, Huang L.   +6 more
europepmc   +1 more source

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Energy transfer by magnetic dipole—magnetic dipole interaction

Chemical Physics Letters, 1993
Abstract The magnetic dipole interaction mechanism is shown to be important in a nonradiative energy transfer process of a lanthanide ion in a centrosymmetric environment. The concentration quenching of near-ultraviolet luminescence in Cs 2 NaTmCl 6 may be explained by this mechanism, the calculated nonradiative transfer rate from the donor Tm 3 ...
Michael Chua, Peter A. Tanner, Michael F. Reid   +2 more
openaire   +2 more sources

On magnetic dipole–dipole interactions of nanoparticles in magnetic particle imaging [PDF]

Physics in Medicine & Biology, 2017
Magnetic dipole-dipole (MDD) interactions between iron oxide nanoparticles can influence the sensitivity, image resolution and quantification of magnetic particle imaging (MPI). For the first time, the Landau-Lifshitz-Gilbert equation (LLG) for MDD interactions has been solved to investigate the effect of MDD interactions on the MPI spectrum.
openaire   +2 more sources

The radiofrequency magnetic dipole discharge

Physics of Plasmas, 2016
This paper describes a novel and simple concept of plasma source, which is able to produce a radiofrequency magnetized discharge with minimal power requirements. The source is based on the magnetron concept and uses a permanent magnet as an active electrode. The dipolar field produced by the magnet confines the electrons, which cause further ionization,
Martines E, Zuin M, Marcante M, Cavazzana R, Fassina A, Spolaore M   +5 more
openaire   +5 more sources

Magnetic field of a dipole and the dipole–dipole interaction

European Journal of Physics, 2007
With a data-acquisition system and sensors commercially available, it is easy to determine magnetic fields produced by permanent magnets and to study the dipole–dipole interaction for different separations and angular positions of the magnets. For sufficiently large distances, the results confirm the 1/R3 law for the magnetic field and the 1/R4 law for
openaire   +2 more sources

Magnetic dipole imaging by a scanning magnetic microscope

Measurement Science and Technology, 2007
A reconstruction technique to evaluate residual magnetic fields and simulate magnetic images due to dipole distribution in ferromagnetic samples has been proposed in connection with a scanning magnetic microscope based on a high-Tc superconducting quantum interference device (SQUID).
MAdamo1, 2, C Nappi2, E Sarnelli2
openaire   +4 more sources

Dipole-dipole energy in magnetic crystals

Physics Letters A, 1974
Abstract The magnetic dipole-dipole energy of a set of magnetic moments on a set of equivalent positions in a collinear magnetic crystal having a magnetic configuration of cubic symmetry is shown to be zero.
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Magnetization of Magnetite Nanoparticles Mediums with Weak Magnetic Dipole–Dipole Interaction

Journal of Nanoscience and Nanotechnology, 2011
Magnetization expression of weak interacting (mH/kT = 1-1.5) magnetite nanoparticles mediums was determined. Experimental and calculated magnetization curves, initial magnetic susceptibility of magnetite nanoparticle mediums were compared. It is showed are agree.
openaire   +3 more sources