scholarly journals The influence of fractal geometry on anomalous skin-effect in metal systems

2019 ◽  
Vol 30 ◽  
pp. 07016 ◽  
Author(s):  
Nikolay Torkhov ◽  
Leonid Babak ◽  
Audrey Kokolov ◽  
Feodor Sheyerman

The paper defines basic criteria of surface fractal geometry for 50Ω Au/i-GaAs{100} coplanar microwave transmission lines, which influence on active resistance of their skin-layer and inductivity L. The local approximation limit L for active resistance L(R) is ≈800 um and for inductivity L(L) is ≈400 um.

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.


1962 ◽  
Vol 27 (4) ◽  
pp. 842-843 ◽  
Author(s):  
Sadao Nakajima ◽  
Mitsuo Watabe

1989 ◽  
Vol 32 (4) ◽  
pp. 367-371 ◽  
Author(s):  
V. A. Neganov ◽  
E. I. Nefedov ◽  
V. Porubov

1972 ◽  
Vol 43 (7) ◽  
pp. 2996-3001 ◽  
Author(s):  
G. R. Henry

2020 ◽  
Vol 90 (6) ◽  
pp. 976
Author(s):  
В.А. Соцков ◽  
О.Г. Ашхотов ◽  
Т.Т. Магкоев

The dependences of the active resistance of a number of dielectric-conductor composites on the frequency of the applied voltage in the range of less than one megahertz are experimentally investigated. It is shown that the frequency dependence of the active resistance in dielectric-conductor composites with non-magnetic material is small and is limited by the effect of the skin effect, and in composites with ferromagnetic resistivity decreases by one or two orders of magnitude with increasing frequency.


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