scholarly journals Electromagnetic radiation of oscillating thin films

2019 ◽  
Vol 30 ◽  
pp. 06004
Author(s):  
Alexander V. Kharlanov
Keyword(s):  
Thin Films ◽  
Numerical Simulation ◽  
Electromagnetic Radiation ◽  
Electromagnetic Fields ◽  
Electromagnetic Waves ◽  
Three Dimensional ◽  
Cell Group ◽  
Exchange Of Information ◽  
Dimensional Cell

This paper deals with the electromagnetic fields generated by charges moving with the membrane. The numerical simulation of electromagnetic radiation of oscillating three-dimensional cell it is carried out. The issues of cell group radiation are also considered. Dependences of the field on distance and time are presented. A hypothesis about possible exchange of information between cells by means of electromagnetic waves is made.

The wave structure of monochromatic electromagnetic radiation

1987 ◽  
Vol 409 (1836) ◽  
pp. 21-36 ◽  
Keyword(s):  
Electromagnetic Radiation ◽  
Electromagnetic Waves ◽  
Plane Waves ◽  
Three Dimensional ◽  
Wave Structure ◽  
Single Frequency ◽  
Singularity Index ◽  
Left Handed ◽  
General Field ◽  
Structurally Stable

The paper considers a general field of electromagnetic waves of a single frequency and identifies the salient structurally stable features of the three-dimensional pattern of polarization. The approach is geometrical rather than analytical, and it differs from previous treatments of this kind by being applicable even when the constituent plane waves are travelling in all directions. Lines and surfaces exist where the electric or magnetic vibration ellipse is singular. The field is divided into right-handed and left-handed regions by ‘T surfaces’ , the electric and magnetic T surfaces not being coincident. Lying in the T surfaces are ‘L T lines’ where the vibration is linear, and cutting through the T surfaces are ‘C T lines’ where the vibration is circular. Both kinds of lines are surrounded by characteristic patterns of vibration ellipses, which provide a singularity index, ± 1 for L T and ± ½ for C T . The analysis is applicable in a cavity, but a loss-free resonating cavity represents a highly degenerate case.

Effects of Clothing Structural Factors on Electromagnetic Radiation Protection

2011 ◽  
Vol 175-176 ◽  
pp. 454-459
Author(s):  
Li Li Zhang ◽  
Yan Chen ◽  
Xiao Yu Liu
Keyword(s):  
Electromagnetic Radiation ◽  
Electromagnetic Waves ◽  
Three Dimensional ◽  
Simulation Software ◽  
Structural Factors ◽  
Shielding Effectiveness ◽  
Actual Measurement ◽  
Safety And Health ◽  
Protective Performance ◽  
The Impact

With people's increasing awareness of safety and health, the demands of protective clothing for electromagnetic radiation are gradually increased. The influences of clothing structural factors on protective performance for electromagnetic radiation are studied in this paper. The shielding effectiveness (SE) of fabrics has been tested according to the SJ20524-1995 standard. Meanwhile, according to the measured conditions of fabrics, a simulation model of testing fabric is established by the three-dimensional electromagnetic simulation software Ansoft HFSS to simulate the influences of clothing structural factors on the electromagnetic protective performance under the irradiation of electromagnetic waves at different frequencies. The impact of the length of clothing seams, the size and shape of clothing openings, and the change of clothing layers on the electromagnetic protective performance have been simulated and analyzed in detail. The results show that the simulation results are basically identical with the actual measurement results, and the model of testing fabrics can be applied for the researches on the protective performance for electromagnetic radiation. The study also shows that both seams and openings of clothing will reduce the shielding ability of clothing to electromagnetic radiation, and the change of clothing layers also affects the electromagnetic protective performance of clothing greatly. The results of this article can provide references for the design of electromagnetic shielding clothing, and effectively reduce the adverse effects of clothing structural factors on the protective performance of clothing.

Discussion on Electromagnetic Radiation Protection Standard of Light Industrial Equipments

2010 ◽  
Vol 455 ◽  
pp. 444-448 ◽  
Author(s):  
Zi Qiang Zhang ◽  
G.Y. Yu ◽  
Shao Bo Chen ◽  
Zhi Dan Zheng ◽  
R.D. Li ◽  
...  
Keyword(s):  
Ionizing Radiation ◽  
Electromagnetic Radiation ◽  
Radiation Protection ◽  
Electromagnetic Fields ◽  
Electromagnetic Waves ◽  
Republic Of China ◽  
Electrical Control ◽  
European Committee ◽  
Surrounding Environment ◽  
Electromagnetic Radiations

The popular international and Chinese electromagnetic radiation protection standards are introduced, including the ICNIRP guidelines constituted by the International Commission on Non-Ionizing Radiation Protection, the EN62233 standards established by the European Committee for Electrotechnical Standardization and the GB 8702-88 regulations constituted by Ministry of Environmental Protection of the People’s Republic of China, etc. The situation of the light industrial equipments electromagnetic radiation has been tested and analyzed: the power of the induction heater is often up to thousands kilowatts, and there are many electrical control components and many dense circuitries in light industrial equipments. Their complicated electromagnetic fields release continuously electromagnetic waves and engender electromagnetic radiations to the surrounding environment. And, Chinese electromagnetic radiation protection standards lack limits for band less than 100 KHz (except 50Hz). It makes the electromagnetic radiation assessment of light industrial equipments lack sufficient basis. The electromagnetic radiation protection standard of light industrial equipments was discussed and the limits for electromagnetic radiation protection of light industrial equipments are suggested.

Strain and Stress Distribution in Vickers Indentation of Coated Materials

2006 ◽  
Vol 514-516 ◽  
pp. 1472-1476
Author(s):  
Jorge M. Antunes ◽  
Nataliya A. Sakharova ◽  
José Valdemar Fernandes ◽  
Luís Filipe Menezes
Keyword(s):  
Thin Films ◽  
Mechanical Properties ◽  
Numerical Simulation ◽  
Young’S Modulus ◽  
Indentation Depth ◽  
Young's Modulus ◽  
Three Dimensional ◽  
Depth Sensing ◽  
Coated Materials ◽  
Film Substrate

Depth sensing indentation equipment allows the mechanical properties of thin films to be easily determined, particularly the hardness and Young’s modulus. In order to minimize the influence of the substrate on the measured properties, the indentation depth must be limited to a small fraction of the film’s thickness. However, for very thin films, the determination of the contribution of the substrate and the film to the measured mechanical properties becomes a hard task, because both deform plastically. The numerical simulation of ultramicrohardness tests can be a helpful tool towards better understanding of the influence of the parameters involved in the mechanical characterization of thin films. For this purpose, a three-dimensional numerical simulation home code, HAFILM, was used to simulate ultramicrohardness tests on coated substrates. Materials with different Young’s modulus film/substrate ratios were tested. Analyses of strain and stress distributions for several indentation depth values were performed, in order to clarify the composite behaviour.

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