Records |
Author |
Gershenzon, E. M.; Gol'tsman, G. N.; Semenov, A. D. |
Title |
Submillimeter backward wave tube spectrometer for measuring superconducting film transmission |
Type |
Journal Article |
Year |
1983 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Pribory i Tekhnika Eksperimenta |
Abbreviated Journal |
Pribory i Tekhnika Eksperimenta |
Volume |
26 |
Issue |
5 |
Pages |
134-137 |
Keywords |
BWO spectroscopy, spectrometer, transmission |
Abstract |
A spectrometer employing six backward wave tubes is described. It is intended for investigation of superconductors in the 0.2-3 mm range of wave lengths. During the measurement of the transmission spectrum it is possible to determine the energy gap for superconduct1ng films 50 to 4000 A thick. The transmission factor can vary from 10-1 to 10-9. Spectrum of relation of film transmission factors in superconducting and normal states is measured for determining the energy gap 2 Δ. The transmission spectrum obtained by means of a computer for vanadium film 300 A thick is given as an example. The energy gap 2 Δ = 1.4 MeV |
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Russian |
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0032-8162 |
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Субмиллиметровый спектрометр с лампами обратной волны для измерения пропускания сверхпроводниковых пленок |
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Serial |
1713 |
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Author |
Goltsman, G. |
Title |
Simple method for stabilizing power of submillimetric spectrometer |
Type |
Journal Article |
Year |
1972 |
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Pribory i Tekhnika Eksperimenta |
Abbreviated Journal |
Pribory i Tekhnika Eksperimenta |
Volume |
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Issue |
1 |
Pages |
136 |
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Mezhdunarodnaya Kniga 39 Dimitrova Ul., Moscow, 113095, Russia |
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Serial |
1738 |
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Author |
Gershenzon, E. M.; Gurvich, Y. A.; Orlova, S. L.; Ptitsina, N. G. |
Title |
Scattering of electrons by charged impurities in Ge under cyclotron resonance conditions |
Type |
Journal Article |
Year |
1976 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Presumably: Sov. Phys. Semicond. | Физика и техника полупроводников |
Abbreviated Journal |
Presumably: Sov. Phys. Semicond. | Физика и техника полупроводников |
Volume |
10 |
Issue |
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Pages |
1379-1383 |
Keywords |
Ge, cyclotron resonance, charged impurities, |
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1772 |
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Author |
Bondarenko, O. I.; Gershenzon, E. M.; Gurvich, Y. A.; Orlova, S. L.; Ptitsina, N. G. |
Title |
Measurement of the width of the cyclotron resonance line of n-type Ge in quantizing magnetic fields |
Type |
Journal Article |
Year |
1972 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Presumably: Sov. Phys. Semicond. | Физика и техника полупроводников |
Abbreviated Journal |
Presumably: Sov. Phys. Semicond. | Физика и техника полупроводников |
Volume |
6 |
Issue |
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Pages |
362-363 |
Keywords |
Ge, cyclotron resonance, quantizing magnetic fields |
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1774 |
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Gorokhov, G.; Bychanok, D.; Gayduchenko, I.; Rogov, Y.; Zhukova, E.; Zhukov, S.; Kadyrov, L.; Fedorov, G.; Ivanov, E.; Kotsilkova, R.; Macutkevic, J.; Kuzhir, P. |
Title |
THz spectroscopy as a versatile tool for filler distribution diagnostics in polymer nanocomposites |
Type |
Journal Article |
Year |
2020 |
Publication ![sorted by Publication field, descending order (down)](img/sort_desc.gif) |
Polymers (Basel) |
Abbreviated Journal |
Polymers (Basel) |
Volume |
12 |
Issue |
12 |
Pages |
3037 (1 to 14) |
Keywords |
THz spectroscopy; nanocomposites, percolation threshold, time-domain spectroscopy, time-domain spectrometer, TDS |
Abstract |
Polymer composites containing nanocarbon fillers are under intensive investigation worldwide due to their remarkable electromagnetic properties distinguished not only by components as such, but the distribution and interaction of the fillers inside the polymer matrix. The theory herein reveals that a particular effect connected with the homogeneity of a composite manifests itself in the terahertz range. Transmission time-domain terahertz spectroscopy was applied to the investigation of nanocomposites obtained by co-extrusion of PLA polymer with additions of graphene nanoplatelets and multi-walled carbon nanotubes. The THz peak of permittivity's imaginary part predicted by the applied model was experimentally shown for GNP-containing composites both below and above the percolation threshold. The physical nature of the peak was explained by the impact on filler particles excluded from the percolation network due to the peculiarities of filler distribution. Terahertz spectroscopy as a versatile instrument of filler distribution diagnostics is discussed. |
Address |
Institute of Photonics, University of Eastern Finland, Yliopistokatu 7, FI-80101 Joensuu, Finland |
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English |
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2073-4360 |
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PMID:33353036; PMCID:PMC7767186 |
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Call Number |
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Serial |
1780 |
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