1322 Dependence of electromagnetic field observed around infinite plate on frequency of alternating current

2011 ◽  
Vol 2011.86 (0) ◽  
pp. _13-28_
Author(s):  
Eiji MATSUSHIMA ◽  
Yoko NISHIMURA
Keyword(s):  
Electromagnetic Field ◽  
Infinite Plate ◽  
Alternating Current

scholarly journals Electromagnetic field emitted by core–shell semiconductor nanowires driven by an alternating current

2021 ◽  
Vol 130 (3) ◽  
pp. 034301
Author(s):  
Miguel Urbaneja Torres ◽  
Kristjan Ottar Klausen ◽  
Anna Sitek ◽  
Sigurdur I. Erlingsson ◽  
Vidar Gudmundsson ◽  
...  
Keyword(s):  
Electromagnetic Field ◽  
Alternating Current ◽  
Semiconductor Nanowires ◽  
Core Shell

A NEW ELECTROMAGNETIC FIELD TECHNIQUE

Geophysics ◽  
1955 ◽  
Vol 20 (2) ◽  
pp. 318-334 ◽  
Author(s):  
J. F. Enslin
Keyword(s):  
Electromagnetic Field ◽  
Alternating Current ◽  
Tangential Component ◽  
Minor Importance ◽  
Audio Frequency ◽  
Phase Measurements ◽  
Field Technique ◽  
Center Point ◽  
Concentric Circles ◽  
Absolute Measurements

A technique has been developed for accurate location of narrow vertical or inclined structures such as joints, fault planes, mineralized fissures, and weathered dykes. An alternating current of audio‐frequency is introduced conductively into the ground at a center‐point. Relative or absolute measurements of the tangential component of the resultant horizontal electromagnetic field are made at stations on concentric circles around the center‐point. Curves of the amplitudes, in decibels, are plotted as ordinates against the station positions. These are called the [Formula: see text]. The locations of peaks occurring vertically above current concentrations in narrow conducting zones are plotted on a map of the area and corresponding peaks are easily joined up to delineate such structures. Phase measurements have proved to be of minor importance for the location of geologic structures.

Field Distribution Adjacent to Apertures Located on Infinite Plates

2014 ◽  
Vol 602-605 ◽  
pp. 335-338
Author(s):  
Run Xiong ◽  
Bin Chen ◽  
Zheng Jun Wang
Keyword(s):  
Electromagnetic Field ◽  
Field Distribution ◽  
Time Domain ◽  
Finite Difference Time Domain ◽  
Infinite Plate ◽  
Fdtd Simulation ◽  
Electromagnetic Field Distribution ◽  
Coupling Principle ◽  
Difference Time ◽  
Electromagnetic Field Component

In this paper, electromagnetic field distribution adjacent to the aperture is analyzed to help deducing the coupling principle of apertures. The aperture is located on an infinite plate to avoid the effect of other structures. Taking advantage of high-resolution standard finite-difference time-domain (FDTD) simulation, it is possible to observe the electromagnetic field distribution adjacent to the aperture. From analyses, it can be seen that the electromagnetic field component is dramatically varied adjacent to the aperture, and conclusions drawn here is helpful to deduce the coupling principle of apertures.

A Fundamental Study on the Processing of Heavy Metals Contained in Underground Water by Composite Modulation Electromagnetic Field Processing

2014 ◽  
Vol 1025-1026 ◽  
pp. 661-667
Author(s):  
Sang An Ha ◽  
Dong Kyun Kim ◽  
Dong Won Lee ◽  
Byong Ho Jung ◽  
Jong Moon Lee ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Electromagnetic Field ◽  
Organic Contaminants ◽  
Water Contamination ◽  
Alternating Current ◽  
Underground Water ◽  
Redox Equilibrium ◽  
Fundamental Study ◽  
Continuous Type ◽  
Organic Complexes

The present study is aimed at deriving study factors appropriate for removal of heavy metals in a region with combined contamination of non-biodegradable organics or heavy metal ions in soil or underground water contamination or a region with underground water contamination using a composite alternating current electromagnetic field with combined modulation of an electric and a magnetic field. In addition, it is directed at deriving fundamental experiment, design factors that can be utilized in removing organic contaminants or metal-organic complexes having polarity of an electric charge. The continuous-type apparatus for fusion process in a composite alternating current electric field employed in the present study was designed to process a maximum of 260 L. Each configuration is provided with electrolytic decomposition apparatus, Magnetic Equipment, Power supply and Electrode plates with an adjustable distance between electrodes. By measuring oxidation and reduction processes of ions appearing in chemical reaction processes, electric potentials produced by injection of a negative reactivity electrode into an aqueous solution in a reversible redox equilibrium condition were measured.

Effect of Electromagnetic Field on Microstructure of 5052 Aluminum Alloy Sheet by Roll-Casting

2010 ◽  
Vol 146-147 ◽  
pp. 911-915
Author(s):  
Jin Tao Li ◽  
Guang Ming Xu ◽  
Jian Zhong Cui
Keyword(s):  
Magnetic Field ◽  
Electromagnetic Field ◽  
Aluminum Alloy ◽  
Static Magnetic Field ◽  
Alternating Current ◽  
Alloy Sheet ◽  
Aluminum Alloy Sheet ◽  
Oscillation Effect ◽  
Electromagnetic Oscillation ◽  
Roll Casting

The effect of electromagnetic field on microstructure of roll-casting 5052 aluminum alloy sheet has been investigated and analyzed. The results indicate that imposing static magnetic field can refine the grains of 5052 aluminum alloy during the roll-casting; accordingly, imposing static magnetic field and alternating current at the same time, the grains are remarkably refined and equiaxed due to electromagnetic oscillation effect.

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